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After 23 hellacious hours underscored by the loss of innocent lives, the evil betrayal of Tony Almeida, the First Gentleman's kidnapping and shooting, a vicious siege on the White House, heroic sacrifices, a conspiracy, exposure to a lethal pathogen and an unthinkable bio-weapon attack, Jack Bauer reaches an emotional breaking point as this remarkable day reaches its climactic conclusion.

After 22 hellacious hours underscored by the loss of innocent lives, the evil betrayal of Tony Almeida, the First Gentleman's kidnapping and shooting, a vicious siege on the White House, heroic sacrifices, a conspiracy, exposure to a lethal pathogen and an unthinkable bio-weapon attack, Jack Bauer reaches an emotional breaking point as this remarkable day reaches its climactic conclusion.

Innocent lives remain in the line of fire as this terrifying day draws to a close. Jack is faced with an unthinkable situation while his perpetually imperiled daughter, Kim, gets involved. Meanwhile, the imminent threat stokes the heated rivalry between Chloe and Janis.

While lives remain on the line, an emotional Chloe copes with the declining conditions. With only a few hours left in Jack Bauer's day, the situation worsens when the politicking inside the White House corners the divided administration.

Episode Synopsis: Jack's pain from the pathogen significantly increases, but he's determined to endure it. Meanwhile, the FBI investigates some lethal developments.

As the nation remains vulnerable, Jack Bauer endures the worsening pathogen pain. The FBI deals with recent deadly developments while matters involving key players takes this day into a unexpected direction.

Jack Bauer endures the elements and fights on to prevent an attack that could change the country forever. As the catastrophic blow to the nation nears, Tony Almeida operates from the field and Kim Bauer, who was last seen in season 5, returns. Meanwhile, the stakes are raised when the administration is faced with a blackmail scenario.

Jack and the FBI work on a strategy to ward off further terror attacks, but a surprising turn of events occurs when the politics of the administration unfold beyond the White House.

The FBI collaborates with other agencies as theories linking Starkwood and Sangala begin to emerge and thousands of lives are placed in jeopardy.

Perilous circumstances lead Jack Bauer and Tony Almeida to a shipyard, and back at the FBI, Agent Moss needs complete cooperation from his staff when the stressful situation takes an unexpected turn. Meanwhile, First Daughter Olivia Taylor becomes increasingly involved in the politicking, and the administration reels when a high-ranking official delivers devastating news.

The day worsens when a conspiracy causes key players to scramble and the politicking in the administration to escalate. Agent Renee Walker receives key intelligence, and Jack Bauer yields results from a surprise meeting. Meanwhile, at the FBI, Janis Gold and Larry Moss deal with Morris O'Brian as the pressure soars.

President Taylor is faced with a compounding foreign-policy dilemma. Jack takes charge as a threat develops stateside.

When Dubaku's evil plan escalates to his boss, General Juma, the stakes are raised and steadfast President Taylor faces a deepening foreign policy dilemma. Meanwhile, Jack Bauer's staunch defiance to uncover conspirators inside the government has critical consequences. As Bauer's by-the-book government adversary Senator Mayer heads to the White House for a meeting, another high-impact terror threat develops stateside. Malevolent mastermind and Starkwood honcho Jonas Hodges provokes the situation while Agent Walker leads the grueling investigation in the field and in the water. Stressed-out FBI agents struggle to cope with the circumstances, and Vice President Hayworth is brought into the fold.

When Dubaku's evil plan escalates to his boss, General Juma, the stakes are raised and steadfast President Taylor faces a deepening foreign policy dilemma. Meanwhile, Jack Bauer's staunch defiance to uncover conspirators inside the government has critical consequences. As Bauer's by-the-book government adversary Senator Mayer heads to the White House for a meeting, another high-impact terror threat develops stateside. Malevolent mastermind and Starkwood honcho Jonas Hodges provokes the situation while Agent Walker leads the grueling investigation in the field and in the water. Stressed-out FBI agents struggle to cope with the circumstances, and Vice President Hayworth is brought into the fold.

Jack and FBI Agent Renee Walker keep on following their leads, trying to find and stop Dubaku, with help from Chloe. Meanwhile, incidents leave the First Family and the FBI reeling.

President Taylor struggles with the painful circumstances facing the First Family, including her daughter Olivia. Meanwhile, a huffy Chloe faces-off against paranoid FBI Agent Janis Gold, while Jack and Agent Walker track leads through Washington, D.C. to eliminate the threat of another ruthless terror attack.

As the country reels from the recent terror attacks and faces the mounting global ramifications, the administration refuses to acquiesce and presses on with their disapproval of the Juma regime. As Jack Bauer and team head to the White House for a pivotal meeting with President Taylor, Dubaku raises the stakes when he threatens the First Family.

As U.S. troops remain in position outside of Sangala, Dubaku seeks another high-value target using the CIP module. While the entire NSA scrambles to locate the breach, the situation rapidly escalates. Paranoid FBI Agent Janis Gold commands from her post, while Jack, Tony, Renee, Chloe and Buchanan follow leads.

As Dubaku presses President Taylor to comply with his devilish demands, she contemplates if the administration should negotiate to avert a disastrous terror attack. Meanwhile, away from the White House and the threatening international crisis, the determined First Gentleman struggles with his ongoing domestic mission, and perilous FBI Agent Walker diverts the attention of her tense colleagues. With national security on the line, Jack Bauer has a formidable plan in hopes of shielding the country.

As the threat of terrorism escalates, Jack Bauer is forced to take matters into his own hands to avert the imminent crisis facing the country. Meanwhile, lives are on the line as conflicted Agent Renee Walker copes with the volatile investigation, and FBI honcho Larry Moss is forced to keep a closer eye on his team as the nation's security is in jeopardy. At the White House, international stakes are raised and the First Gentleman proceeds with his personal mission.

The threat in Sangala is still standing and the new president Alison Taylor has to deal with the issues without CTU. Jack is released from the trial to help with the new national security breach in Washington D.C., caused by Tony Almeida.

The threat in Sangala is still standing and the new president Alison Taylor has to deal with the issues without CTU. Jack is released from the trial to help with the new national security breach in Washington D.C., caused by Tony Almeida.

Season 7 begins with Jack Bauer being questioned in a trial in Washington D.C., but it gets interrupted by a national security breach. The person everyone thought was dead, Tony Almeida, is behind the breach. Meanwhile, the new president of the United States, Alison Taylor, has to deal with the on-going situation in Sangala. Also, CTU has been disbanded.

Season 7 begins with Jack Bauer being questioned in a trial in Washington D.C., but it gets interrupted by a national security breach. The person everyone thought was dead, Tony Almeida, is behind the breach. Meanwhile, the new president of the United States, Alison Taylor, has to deal with the on-going situation in Sangala. Also, CTU has been disbanded.

Set and shot on location in Africa, Bauer and mentor Carl Benton battle an international crisis, while here at home the nation prepares for a new president on inauguration day. Taking place just a few months before the new day dawns, U.S. State Department officer Frank Tramell and Jonah Hodges are pulling the strings that will set the stage and raise the stakes for Season Seven.

As the clock approaches the final hours of a long and terrifying day underscored by a nuclear blast, the loss of thousands of innocent lives, a Presidential assassination attempt and the recovery of threatening nukes, Jack stops at nothing to get what he wants and to protect the country from an international incident that could change the world forever.

As the clock approaches the final hours of a long and terrifying day underscored by a nuclear blast, the loss of thousands of innocent lives, a Presidential assassination attempt and the recovery of threatening nukes, Jack stops at nothing to get what he wants and to protect the country from an international incident that could change the world forever.

As the climactic conclusion to "Day Six" nears, the Administration copes with a compromising situation as Jack Bauer stops at nothing to get what he wants and to protect the country from an international incident that could change the world forever.

As the clock ticks closer to the "Day Six" finale, Jack Bauer reels from the recent developments involving Audrey Raines while CTU stresses over the international significance of the threatening state of affairs. Meanwhile, unfortunate circumstances place Vice President Noah Daniels and presidential adviser Tom Lennox in a tense situation with presidential aide Lisa Miller.

As the clock ticks closer to the final hours of Day Six, Jack Bauer copes with the consequences of taking matters into his own hands while Audrey endures what appears to be a post-traumatic reaction to being held captive. Emotions escalate as CTU responds to a setback and the Administration receives an alarming message from Russian President Suvarov.

Developments involving Jack Bauer and Agent Mike Doyle have CTU operatives and analysts scrambling to gain control of an intense situation. Vice President Daniels prepares to address the country while presidential advisor Tom Lennox participates in a personnel decision that will shake things up.

After Jack Bauer and Agent Doyle team up in an attempt to prevent the advancement of the terror threat facing the country, Jack is jarred from an unforeseen development. Meanwhile, CTU shifts its focus as President Wayne Palmer rattles the Administration and the terror threat escalates.

As the Administration resumes an offensive approach, they prepare for the unthinkable. Meanwhile, National Security Advisor Karen Hayes and her husband, CTU honcho Bill Buchanan, struggle with respective challenges while Jack Bauer and evildoer Fayed come face to face, which is followed by a shocking development.

When Jack relays critical information involving Russian terrorist mastermind Gredenko, CTU must respond immediately. Meanwhile, Vice President Noah Daniels challenges the Administration throughout an intense strategy and policy conference inside the Presidential bunker. As the clock continues to tick on the intensifying day, this hour takes the terror threat and investigation into unforeseen directions and locations as well as a shocking development in the final minute.

The nuclear threat has unexpected consequences while the investigation into the remaining nukes accelerates. As terrorists Gredenko and Fayed discuss their strategies, the Administration copes with the worsening situation during the ongoing power shifts. CTU commands newcomer Mike Doyle and Jack Bauer on an intense field operation as the clock continues to race.

Following the shocking events at the Russian Consulate, CTU tracks Gredenko and attempts to thwart further terror attacks on U.S. soil. Jack Bauer copes with devastating news while Vice President Noah Daniels considers controversial strategies.

As Jack Bauer continues to pursue an unexpected lead, two unlikely foes come face-to-face in attempt to defuse an escalating international situation. CTU newcomer Mike Doyle makes an impact when he joins in the hunt for new leads. Meanwhile, the Administration and CTU prepare to take new measures that could change the world forever.

As the current Administration deals with a shocking setback, former President Charles Logan becomes increasingly involved. Meanwhile, politicos Pollock and Lennox are tied up in a very messy situation. Jack Bauer faces pulse-pounding pressure as he pursues new unexpected leads and dangerously attempts to thwart the terrorists for executing the unthinkable.

As a presidential press conference nears, President Palmer calls a staff meeting and unites two unlikely and influential people. Meanwhile, savvy politicos Tom Lennox and Reed Pollock encounter yet another tense situation as CTU copes with an unexpected weakness. A surprising development has Jack Bauer dealing with a familiar foe.

CTU analyst Chloe OBrian covers for a fellow agent, and CTU cohort Milo Pressman faces the pressure of new threatening situation. Meanwhile, Jack Bauer struggles with yet another setback, the terror threat advances and the Administration remains bunkered down.

In this special two-hour event, the nation continues to reel from the terrorist attacks and Agent Bauer battles unthinkable circumstances. Additionally, savvy politico Reed Pollock and Vice President Noah Daniel's become increasingly involved while Gredenko and Fayed maneuver the threat.

In this special two-hour event, the nation continues to reel from the terrorist attacks and Agent Bauer battles unthinkable circumstances. Additionally, savvy politico Reed Pollock and Vice President Noah Daniel's become increasingly involved while Gredenko and Fayed maneuver the threat.

As the horrific day unravels, Jack Bauer, reunited with his estranged father, deals with unthinkable challenges. While the nation copes with the nuclear attack and the threatening situation, developments in the Administration and at CTU intensify the critical circumstances facing the country.

As the nightmarish morning ticks toward what appears to be another long afternoon for Jack, the untimely and surprising faces of his family surface. Meanwhile the country reels from the threatening situation and additional terror attacks. Savvy politico Reed Pollack and Thomas Lennox strategize while President Wayne Palmer attempts to sort out a sticky situation.

Fayed searches for someone to make triggers for four more bombs. Back at CTU, Assad mentions a lead that traces back to Jack's family. In the Anacostia detention facility, Walid is instructed by the FBI to infiltrate a group of suspicious men.

Curtis' animosity towards Assad doesn't go unnoticed and Jack has Chloe run a cross check on the two of them. Morris and Milo's feuding comes to a head and Ray delivers a package to Fayed.

President Palmer is forced to comply with Fayed's demand to release 110 prisoners. Jack works with Assad as they try to track down Fayed. Meanwhile, Ahmed surprises the Wallace family.

After making his escape, Jack warns the President to reconsider calling the airstrike on Assad despite his advisors recommending for it to go ahead. The FBI arrives at Sandra Palmer's offices requesting access to the organisation's personnel files whilst Ahmed has to deal with a hateful neighbour.

A series of bombs explode throughout the country and President Wayne Palmer must give in to a terrorist's demands if he is to halt the attacks.

Martha delays her husband from boarding the helicopter whilst Aaron and Mike work together to get Jack on board Marine One. Jack prepares to induce a confession from the President and record it for the Attorney General.

Jack and his team must find a way to board the submarine that Vladimir Bierko has locked down and prevent its missiles from being launched. A glimmer of hope arises in the form of a lone survivor inside. Martha brings Mike into the fold and Chloe has to enlist the help of her ex-husband.

Moments away from a video conference with the Attorney General to present the evidence against President Logan, Jack, Chloe, Bill and Karen discover that the recording has been wiped. CTU are informed of Bierko's escape and Jack is forced to work with an old foe in order to work out where Bierko will target next. Martha stumbles upon Agent Adams in the midst of doing her husband's dirty work.

Jack is safely en route back to Van Nuys Airport but Graham is intent on stopping him before he lands and forces President Logan to shoot down the plane before they are all exposed. Audrey receives some good news whilst Miles is angry at being shut out by Karen who is now working closely with Bill and Chloe.

Having been warned by Karen Hayes, Chloe manages to escape the Homeland Security team sent to capture her. Jack searches for the recording on the flight whilst Martha is having trouble coming to terms with her husband's involvement in the day's events. President Logan faces mounting pressure from Graham to find Jack, Mike suspects there's more to Martha's behaviour than she's letting on and Jack has the plane's captain to contend with.

Christopher Henderson presents a new problem for President Logan. Bill and Chloe help Jack track down Henderson who reveals a shocking contingency plan. The President faces mounting pressure from a power broker and is forced to silence his wife. Meanwhile, CTU close in on Chloe's location.

Jack and Audrey meet James Heller at the airport to show him the recording. Karen and Miles resort to deceptive measures to find Jack. President Logan's decisions continue to baffle Karen as well as Mike. The President is given an ultimatum, and without the evidence in his hands, it's one which he has little choice but to accept.

Jack and Wayne leave Evelyn and her daughter in a motel room whilst they recover the recording they need from a bank vault. Audrey arranges a meeting with her father so that a credible figure in the government can present the evidence once it's been retrieved. President Logan orders Karen Hayes to issue a warrant for Jack's arrest.

Karen Hayes is finally forced to realign CTU by Vice President Gardner but Bill isn't going to step down easily. Miles puts forward a plan to use Audrey and her split loyalty between CTU and DoD in an effort to justify the takeover. Wayne Palmer reveals the identity of his brother's source in the White House and Jack goes after Henderson. Suspicion mounts on the Vice President as the mastermind behind the day's events.

Vladimir Bierko launches his final attack which could possibly be his most lethal. Shari Rothenberg arrives to replace Edgar but Miles is not too happy to see her. Jack interrogates an unlikely suspect and an assault team is sent out to stop the deployment of the remaining nerve gas but are they too late?

President Logan declares martial law in Los Angeles despite his wife's apprehension. Homeland Security begin their assessment of CTU prior to their intended takeover. Wayne Palmer arranges to meet with Aaron Pierce in order to give him something. Vladimir Bierko plans to kill 200,000 people with his next attack whilst Jack and Curtis track down Collette Stenger.

The remaining CTU personnel discover they don't have much time in the safe zones. They will have to take matters into their own hands if they're to survive. Hal Gardner's influence over President Logan increases but Mike and Martha intend to put a stop to it. Homeland Security makes plans to take over CTU and Tony holds back from exacting his revenge on Henderson for Michelle's death but for how long?

Vice President Hal Gardner joins the President to offer new suggestions on how to deal with the terrorist threat to the dismay of Mike. CTU is infiltrated by Bierko's man using Lynn's keycard. Tony wants to know who's responsible for Michelle's death. Christopher Henderson is taken back to CTU and interrogated.

Tony regains consciousness and wonders how Michelle is doing. Martha and the Suvarovs head back to the retreat where Yuri makes known his observations of Martha's erratic behaviour to President Logan. Lynn tries to persuade his sister to give the keycard back. CTU find a schematic on one of the dead terrorists and attempt to locate their next target. Meanwhile, Jack heads to Christopher Henderson's house and questions his wife.

President Logan learns of his wife's whereabouts and desperately tries to persuade her to leave the motorcade before the imminent attack by the Russian terrorists. Audrey, Chloe and Edgar work behind Lynn's back as they help Jack follow up on a lead which reunites him with the man that brought him to CTU. Wanting to avoid further embarrassment, Lynn stops listening to his colleagues and the situation comes to a head at CTU.

Jack gets another lead when Nathanson decides to contact him. A new face emerges amongst the Russian terrorists and President Logan is forced to make a difficult decision. Lynn is on meltdown as the pressure on him increases.

Jack goes undercover as Rossler and delivers the chip for the remote trigger to Irwich's men in the hopes that they will lead CTU back to Irwich and the nerve gas canisters. However, all does not go to plan and Jack is forced to help the men release a canister of nerve gas in a public place.

Martha comforts Walt Cummings' widow, Suzanne, as she arrives to pick up her late husband's body.

Ivan Erwich begins the process of reconfiguring the triggering mechanisms on the nerve gas canisters with the aid of Jacob Rossler. Martha persuades her husband to go public about his Chief of Staff and they work together on a statement for the press.

Jack and Curtis infiltrate Rossler's building which leads to a difficult situation for Jack. Meanwhile, Lynn is pulled away from CTU by his troublesome sister.

In order to locate the nerve gas quickly, Jack enlists the help of Mike Novick to get to Walt Cummings.

Meanwhile, Martha accepts defeat when she's found in the stables and prepares to be admitted into a psychiatric clinic.

CTU is forced to investigate its own staff while a touching reunion between Jack and Audrey turns awkward. As the national threat worsens, unexpected players and ulterior motives surface and President Logan begins to break down.

Having forced Jack out of hiding, Beresch sets a trap for Curtis and his men. President Logan worries over the possibility of more innocent lives lost as the treaty signing approaches.

Lynn McGill arrives from District to oversee things at CTU.

Jack works with CTU from his hidden position within the airport terminal whilst Curtis prepares an assault plan.

Martha Logan attempts to track down a hard copy of her phone conversation with David Palmer.

Based on the evidence CTU has, Jack quickly becomes the prime suspect. Meanwhile, a shaky President Logan is forced to balance the national security emergency with the signing of a significant arms treaty he believes will be his legacy.

Now living under a false name and working in an oil field, Jack leads a quiet life, renting a room with a woman and her son. An early morning breach of national security, however, triggers the series' most shocking season opener yet, forcing Jack to reemerge.

As the missile speeds toward its destination, Mandy cuts a deal with Jack and the President to give up Marwan's location in exchange for a full pardon on all of her crimes. Tony and Michelle share a happy reunion, but Jack finds his relationship with Audrey shattered as she makes her feelings known. Logan's advisor suggests a drastic course of action when the Chinese government demands that Jack be handed over to them for trial. Palmer tries desperately to warn Jack of the danger against him. Jack's life changes forever as Tony, Michelle and Chloe help him to evade the trap set for him by Secret Service.

Mandy uses Tony as leverage to try to force Michelle to aid in her escape. A Chinese security operative captures and interrogates one of the CTU agents involved in the raid on the embassy. Palmer and Logan argue over the option of evacuating all major cities that may be targets for the missile.

Jack finds that his efforts to bargain with Marwan for the location of the missile strike are futile. Heller pushes his son for information when CTU discovers that he may have had contact with Marwan before the attacks. Logan finds himself in the middle of a power struggle between Palmer and the ambitious Speaker of the House. Tony and Michelle explore their rekindled passion for each other, but their hopes for the future may be short-lived when a familiar player enters the game and takes a hostage.

CTU scrambles to forge an alibi when a Chinese representative produces evidence of American involvement in the raid on their embassy. Audrey gives Jack the cold shoulder, while Palmer and Logan clash over the consequences of Palmer's decisions. Jack and Curtis close in on Marwan as the countdown for the missile launch moves ahead.

After Logan authorizes Palmer to take charge of the crisis, Palmer sanctions Jack and Curtis to infiltrate the Chinese Embassy on a covert operation to capture a suspect. Tony and Michelle continue to bump into each other's personal lives, while Buchanan expresses anger at being kept out of the mission. Jack faces Audrey's wrath when a medical dilemma places Paul's life in jeopardy.

Chloe is unexpectedly thrust into fieldwork when a woman reports that her boyfriend may be part of the terrorist conspiracy. Jack and Curtis find their latest efforts to trap Marwan thwarted by the Secret Service, who have orders to arrest Jack for insubordination. Mike calls on ex-President David Palmer for help as Logan continues to display a lack of leadership.

Curtis brings in a suspect who has critical information about Marwan's next strike. Michelle orders Curtis to use harsh methods to interrogate the suspect, but things get complicated when Marwan sends a lawyer to defend his rights. Logan's advisors begin to worry as he continues to exhibit fear in the face of the ongoing terrorist threat.

Mike pushes for the Vice-President to be sworn into office as the White House waits for news of Keeler's fate. Two innocent bystanders are dragged into the fight as Jack and Marwan both pursue a briefcase that contains the launch codes for America's nuclear arsenal.

CTU raids Marwan's hideout, but he manages to slip through their fingers. Luckily, Jack locates a lead that may help him identify Marwan's next target. Tony becomes suspicious of Michelle's personal life, while Audrey reunites with Paul and learns the extent of his injuries. Anderson closes in on his quarry, as President Keeler searches for words that will comfort the American public.

Marwan decides to trade Jack for Behrooz in hopes of distracting CTU from his real objective. Tony and Michelle weigh the consequences of the trade, while Curtis reluctantly interrogates Behrooz in order to learn more about Marwan.

Jack learns the identity of a man who may be able to lead him to Marwan. He forces Dina to help him in a mock hostage situation that will get him close to the suspect. Michelle calls on Chloe for help when Edgar begins to crack under pressure. Meanwhile, Audrey stands by as a gravely wounded Paul is taken into surgery. Marwan's plan continues as his henchman uses an unwilling pilot to gain access to an airfield.

Jack and Paul are hunted down by soldiers after an electromagnetic pulse bomb wipes out every electrical device for miles. Meanwhile, Michelle Dessler takes over at CTU.

Jack and Paul visit the defense contractor who employed Marwan, but the company executives put their own interests ahead of CTU's and take major steps to destroy evidence. After a grief-stricken Driscoll relinquishes her command, Heller appoints Tony as interim director to oversee the latest crisis.

Jack and Curtis finally learn the location of the override device. They try to trap the architect of the terrorist strike before the remaining nuclear plants go critical. Tony pushes Dina to reveal more of her knowledge of Marwan, while Driscoll faces another personal crisis with her daughter.

Audrey places herself in a compromising position when she and Jack learn of her husband's possible involvement with the terrorists. Marianne offers Curtis information on the location of the override device in exchange for a lighter sentence, but the tables soon turn and Curtis discovers that there's another player in the game. Sarah bargains for a stronger position at CTU, while Tony takes charge of the interrogation of Dina and Behrooz.

Jack and Tony are able to trace Dina's location, but Behrooz slips through their fingers. Dina demands a full pardon for her son in exchange for information on the override device. Edgar wrestles with his emotions when his mother is trapped in the path of the nuclear fall-out. Behrooz turns to his uncle for help, but Navi closes in on him before he can get away.

Jack and Audrey hide out with an embittered Tony as Audrey makes a positive ID of the man from the kidnapping. Marianne successfully diverts suspicion from herself, leading Driscoll to torture the wrong person for information. Behrooz takes Dina to a hospital for medical attention, but the doctor becomes suspicious of her gunshot wound and phones the police.

Jack takes Audrey to ID the man she recognized at the compound, but the terrorists get there soon after and pin them down. Jack must call on an old friend to help him escape. Heller puts Edgar in charge of dealing with the nuclear override, while Driscoll's daughter takes a turn for the worse. Dina is wounded when she helps Behrooz flee from Navi. Navi's boss orders him to kill his wife and son before the day is over.

Jack initiates a fierce gun battle with the terrorists as he races to rescue Heller and Audrey before the military strike begins. Dina questions her own dedication to their cause when her husband reveals his plans for Behrooz. Driscoll and Curtis uncover new evidence that points to an even bigger attack by the terrorists. Audrey has an awkward meeting with her husband, and Heller butts heads once again with his son.

Jack and Driscoll agree to work together when the police make a critical error in dealing with Kalil. Heller and Audrey take drastic action in the hopes of avoiding the impending trial. Driscoll makes a deal with Chloe to get her out of the way, while the Araz family faces another problem in their cover-up.

Jack acts as a bandit and takes hostages to buy Chloe more time to get satellite surveillance. Meanwhile, Chloe must confide in Edgar for help when Driscoll becomes suspicious. Behrooz discovers just how far his mother is willing to go to insure that their secret mission is successful. Heller and Audrey attempt to escape from Omar, while Driscoll uses her influence to deal with a personal crisis.

Jack tracks Kalil with Chloe's aid, but is forced to watch helplessly as Andrew is tortured for information. Behrooz pleads with his parents when they order him to bring Debbie to their home for questioning. Curtis uses harsh methods to interrogate Heller's son as Driscoll continues to search for Jack.

Jack pushes Driscoll to reinstate him in the wake of Heller's kidnapping. He finds himself working as a subordinate when the Field Ops team goes to pick up Andrew. Behrooz finds himself torn between his loyalty to his parents and his feelings for his girlfriend as he is sent on his first assignment. Heller tries to comfort his daughter as his captors broadcast their intensions on the Internet.

Eighteen months have elapsed since the conclusion of Day 3. A commuter train bound for Los Angeles explodes. A man steals a suitcase from a passenger in the wreckage and then kills him. Jack has been dismissed from CTU and now works for Secretary of Defense James Heller. Jack is involved with Heller's daughter, Audrey, and their relationship is growing serious. Jack is in LA for a meeting with CTU Director Erin Driscoll, who fired him a year ago, but he finds himself alienated at CTU by Driscoll and the new staff when reports of a possible terrorist strike come in. A young computer hacker named Andrew Paige sees something that he shouldn't on the Internet. Suddenly, he finds himself running for his life as he is pursued by terrorists. Luckily, he is able to warn Chloe O'Brian before its too late. The Turkish Araz family are not what they seem and it becomes clear that they are heavily involved with the day's events. Meanwhile, Heller has a confrontation with his estranged son. Jack finds that Chloe is his only ally as he tries to prove that the train explosion is merely a diversionary target.

Palmer's White House woes escalate when Saunders demands that he dissolve the U.S. military. Jack finds a chink in The Evil British Guy's armor. Gun-toting Kim stays busy in the field. Tony could face the death penalty for failing to maintain national security. Says co-executive producer Evan Katz: "We're ending the story with a bunch of big events that are extremely surprising."

In the city of Santa Barbera Jack will interview a gunshot victim at Marriot City Park. The victim is a white male about 6'3. Jack asks him some questions as he is going into an ambulance. Jack calls someone on his cell and relays some intel. Jack sees Kim sitting down on a bench near the command post and he walks over to her and they talk, at the end of the conversation Jack kisses Kim on the forehead. A black CTU SWAT team van will be there and two local Santa Barbera cops will arrive in patrol cars. Jane Saunders gets taken out of the CTU field operations command post. Kim, a black CTU agent and a white CTU agent take Jane into a awaiting car. Jane is asked a few questions by another unknown female agent then Kim and Jane leave in the beige CTU car.

Jack is about 100 miles outside of Los Angeles. He makes his way to the coast of the city of Santa Barbara. He gets a lead on the bio-terrorists and goes to Cal State Santa Barbara University. He engages in a fierce chase and firefight and recovering Kim from the hands of the terrorists is his primary objective. Jack's secondary objective is the remaining vials.

Jane and Kim head back to Los Angeles in the CTU motorcade. President Palmer must make a decision regarding Saunders newest demand. Sherry approaches Palmer's political opponent with a unique offer. CTU gets intel on Saunders location but soon realize he has a new asset.

The President is ordered to leave L.A., and asks the press to help maximize public safety; Jack gives Jane a crash course on her father; the virus affects another CTU operative.

Jack urges caution with a new lead and it comes back to bite him; Cole seeks help for his nose; Palmer convenes the cabinet before hearing Saunders' next demand, and ultimate goal.

Jack and Chase race against time to capture Saunders before the deadline, while Chappelle plans an escape. Michelle begins a frantic search when she learns that an infected hotel guest may have slipped through her fingers.

Saunders begins making demands on the President. He forces Palmer to hold a strange press conference and then orders the death of the CTU agent who can trace him. Jack learns of a woman who can lead him to Saunders, but a surprise attack shifts the balance of power. As Gael's symptoms get worse, Michelle devises a way to relieve the suffering of the victims at the hotel.

Jack and Chase track Amador in the hopes that he can lead them to the man behind the virus attack. Michelle faces a mob riot when the hotel is quarantined. Sherry extorts Palmer, forcing him to manufacture her alibi for the police.

Chappelle threatens to pull Jack from the investigation for killing a material witness, but Jack persuades him to hold off when they find a fresh lead on Amador's whereabouts. Amador and Alvers meet with the man who is planning to unleash the virus in LA within the hour. Michelle and Gael locate the target area, but things really hit the fan when they attempt to capture Alvers in the process of releasing the virus. Wayne argues with Sherry over the consequences of Milliken's death as the police turn up the heat on Julia.

After confronting Jack about his drug use, Chappelle considers pulling him from active duty. Meanwhile, Chase faces a secret he's been keeping from CTU; and Sherry creates a dangerous lie to cover her connection to Alan Milliken.

Sherry goes to drastic measures to keep Milliken quiet for good. Nina still needs to complete her objective and she uses new tactics in order to try and secure the virus. A friend of Nina Myers enters the plot. At CTU problems arise and Chloe's skills are needed but she and Angela have left, Chloe comes back to CTU and will soon use her skills to ensure the safety of Los Angeles.

Tensions escalate at CTU with the arrival of a cocky systems analyst and a question about Chloe's baby; Sherry gets the goods on Milliken, but Palmer balks at the price.

Jack forces Nina to work with him in order to get the virus from Amador. Palmer meets with Sherry and convinces her to help him deal with Milliken. Chase remains in Mexico to help with the capture of the virus. Ramon and Hector quarrel when Hector wants to pull out of the deal.

With Jack still undercover, the Salazars torture Chase looking for information about CTUís plans to seize the virus. Meanwhile, Palmerís presidency is being sabotaged by a onetime supporter who wants Wayne fired. To combat this, Palmer turns to a surprising source of help.

The President briefs the nation on why he ended the debate early. He tells a reporter that Anne is innocent, and that they have proof. A high ranking campaign donor insists that Palmer fire Wayne over an affair he had with his wife; Jack makes contact again with Claudia and tells her the plan. He asks for her help in keeping Chase alive and in helping them to escape once the deal is done. The deal goes sour when Nina Myers shows up to buy the virus, outbidding the Salazar's. Jack, Hecter and Ramon plot to steal the virus back from her. What is initially percieved as Tony having memory problems is starting to look like its Kim who is making mistakes.

Anne meets with her ex-husband to pick up letters that will prove her innocence, but things get out of hand; Hector fills Ramon in the reasons for their new alliance with Jack Bauer and assures him that once they buy the virus, they will kill him; Claudia reveals her true nature when she tells Jack how angry she is with him for leaving her behind when his operation ended; Chase arrives in Mexico, and compromises Jack's cover.

Aboard Salazar's plane, his men have a hard time restraining him from killing Jack, now their hostage; Bauer manages to turn the tables on his captors and hold Ramon at gunpoint until the plane lands.

Jack's chopper is forced to land in Downtown LA. He and Salazar steal a car and make for the airport to get Salazar out of the country. Kyle Singer is brought into the LA Health Unit; several tests reveal that he is, in fact, not infected. Tony gets out of surgery, and will make a full recovery. Kim learns that Gael is a Mole when she finds his laptop containing surveilance data on Jack and Kyle and is held captive.

Jack's "rescue" of Salazar goes awry when they get caught in the eye of the prison riot; Chloe unwittingly discovers Jack's heroin addiction; during the debate, Palmer is grilled by his opponent; Kyle tries to hang himself, only to have him and his girlfriend rescued. CTU finds Kyle Singer. Jack and Salazar get in a chopper and leave. Just as they're taking off Chase gets a call that Singer has been taken into custody, but he can't get a hold of Jack.

Kyle escapes the sting at the mall while Tony is critically wounded; Kyle and his girlfriend are later captured by Salazar's men. Palmer must refuse to negotiate so Jack turns "rogue" to break Salazar out of prison so the virus isn't released, but Chase gets in the way. And despite the advice of his brother, Palmer eventually decides not to pay off Anne's ex-husband.

Jack and Nicole Duncan invade the Singer's home, and soon realize that the virus is out. They quarantine the place, but the powder turns out to be uncontaminated, and Jack pieces together that Kyle is infected with the virus. Chase is still angry that Jack sidelined him because of his relationship with Kim.

Jack and Chase visit the last address of the infected body; Palmer suggests cancelling the debate, but Wayne disagrees, hinting at a vulnerability in their opponent; Hector's location is narrowed down.

The third season opens three years after President Palmer's palm peril, with Jack Bauer back onboard at CTU for the latest L.A. crisis - a lethal virus. While taut situations define the series, what stands out in this commercial-free opener are the telltale tensions among the personalities. The president's impatient brother is his new chief of staff; a more mature Kim Bauer is a new CTU techie who has a strangely testy co-worker; and lone ranger Jack is now paired with an edgy new partner, Chase.

Jack and Sherry Palmer prepare for a dangerous meeting with the head of the war conspiracy at the L.A. Coliseum; David Palmer sits in as the Cabinet waits for confirmation of the Cypress Chip's invalidity; the air strike on the Middle East draws nearer; the conspiracy goes to an old agent to put Palmer out of play.

Chappelle's unavailability prompts Division to question Tony, who puts Michelle in position to circumvent their command; Palmer is asked to perform a final executive action; Jack proposes a deal between conspirators.

Backdoor dealings, back stabbings and an actual stabbing convolute matters in this piercing hour, as Jack comes face-to-face with a pair of key players. One can prove the Cyprus recording is a fake; the other knows enough to blow the entire case wide open. But both begin to question their mutual trust when Jack tries to play each against the other. Meanwhile, a shakedown at CTU puts Jack's quest to rest once staffers are informed of a major shake-up in DC; Tony learns he has something in common with Palmer, who lobbies for an ally and talks with a turncoat; and Jack encourages Kim to put a definitive end to the source of her problems.

Jack rescues Kate and retrieves the Cypress Chip; tensions escalate in the CTU between those still supporting Jack's mission, and those trying to stop it; Palmer faces a Cabinet tribunal demanding his resignation; Kim is released from police custody; Jack follows the only useful lead obtained from the damaged Cypress Chip.

Jack is revived, but not without ill effect; Kingsley demands the whereabouts of the Cypress Chip; Mike Novick goes to extreme measures to keep Lynne Kresge quiet; Kate makes a bargain with Yusef's assailants to protect the Cypress Chip; Tony and Michelle face pressure from Ryan Chappelle and Carrie at CTU.

Jack's resolve is tested by a bomber hoping to keep his plan intact; Tony meets the source of stress between Carrie and Michelle; a presidential advisor's loyalty is questioned.

Jack, Kate, Yusef and Captain Wallace fight their way out of a surprise siege; Kim turns herself over to the police and is re-united with Miguel; President Palmer handles East Coast riots with National Guard response; tensions continue between Carrie and Michelle, with Tony refereeing the catfighting; Jack locates the evidence that proves the Cypress Recordings were falsified.

Jack receives a surprising ally before meeting with the surviving member of Coral Snake, who explains the purpose behind the bomb; the Vice President expresses concern about Palmer's capability; Carrie shares her suspicions about Michelle with Tony; Kim balances a precarious hostage situation.

Syed Ali denies that the recordings retrieved from his safehouse are authentic; Palmer preps a major military action against the three suspect nations; Sniper-fire interrupts Ali's transfer to Guantanamo; Suspicion over the recordings spark tensions between Jack and Tony; Palmer affords Jack a matter of hours to provide proof of Ali's statements; Kim walks into a desperate hostage situation; Jack is contacted by the surviving member of Corral Snake with an odd demand.

A detonation deadline is established for the nuclear bomb; Palmerís staff considers two courses of action for the bomb's disposal; Kim leaves Lonnie McRaeís cabin to head for San Jose and contacts her father; Jack volunteers for a disposal mission from which he may not return; Mason makes one last bid to die a hero; Palmer and Mike Novick board Air Force One for Los Angeles; Tony and the CTU staff analyze personal effects from Syed Aliís safehouse.

Jack learns the plane supposedly transporting the bomb is a decoy; Palmer confronts Sherry with information obtained from Roger Stanton; CTU initiates a search for the seventh commando of the Corral Snake unit; Kate aids in the interrogation of a suspect; Kim is led to believe that the nuclear bomb has detonated; George Mason steps down, assigning Tony Almeida the new Director of CTU.

Jack organizes an assault on the paramilitary unit Corral Snake at Norton Airfield Base; Kim becomes acclimated to her new environs when a hunter finds her with an ankle injury; Roger Stanton cracks under the pressure of Ted Simmons interrogation; a CTU Division agent tries to evaluate the Counter-Terrorism Unit's capabilities; Palmer utilizes Sherry's connections to investigate a lead.

Robert Warner gives some history on Marie, who talks to Kate; Jack explores a suspect's vulnerability; Mason tells Tony to stop searching for Kim; Lynne investigates a suspicion about Sherry.

Jack utilizes Kate's unique knowledge to track Syed Ali; Palmer goes to an extreme to extract information from Stanton about the bomb; Kim eludes the California State Police and faces a new and unexpected enemy; Sherry tries to play Stanton's arrest to earn the President's trust; Tony continues the interrogation of Robert Warner.

Palmer helps Jack get away from Nina; Jack learns the commandos who attacked him may have been sent by the NSA; Kim and Miguel try to get away from the police; Mason sinks into nostalgia as his time grows short; Reza helps CTU agents search Bob's computer files.

Jack and Nina's plane crashes; Tony discovers Mason's secret; Mason pits Reza against Bob to discover which of them has ties to the terrorist; Palmer thinks about out how to deal with Weiland's news broadcast.

While Nina and Faheen are brought together, Jack and Michelle must try and decipher their conversation in Arabic for any clue to where the bomb is located; Kim and Miguel are questioned by the police for details about a grizzly discovery in the trunk of Gary's car; and Tony interrogates Reza and Bob, who contradict each other about their possible terrorist ties; Palmer deals with an information leak; and the crew transporting the nuclear device encounters trouble.

Finesse rather than force is required once Jack and Nina reach Visalia; Palmer directs his Chief of Staff to investigate Sherry's charge that a conspiracy within his own government is trying to undermine him; Mason contacts his estranged son; Warner and Reza are taken to CTU.

Nina tries to set the rules as Jack begins his interrogation of the woman who betrayed CTU and killed his wife; the president - dealing with the aftermath of another tragedy - tries to curb speculation by the media and learns from a surprisingly informed source that one of his orders has been countermanded; Marie hurls accusations at her sister Kate as Tony continues to question Reza; Miguel tries to distract Gary at the hospital; and Kim reaches Megan.

George refuses to allow Jack to assist in Nina's interrogation. Jack resorts to blackmail to change George's mind. Palmer and Stanton meet with a Middle Eastern ambassador who may be in league with Second Wave. Tony visits the Warner home and questions Reza about his possible connection with Syed Ali.

Mason faces a no-win situation, while his attempts to retrieve vital information may cost other lives; Reza joins Kate on an errand; Tony and Michelle deal with the aftermath of the CTU bombing; Kim tries to talk Carla into taking a stand for Megan; Jack faces off with Joseph Wald to learn who gave the order to bomb CTU.

Jack tries to undermine Eddie's mission to bomb CTU while George investigates intel leading him to the site of the nuclear bomb's construction and Kim tries to make contact with her father by heading for CTU headquarters.

Jack reestablishes his undercover identity to join a crew of suspected terrorists that may know something about the nuclear device planted in Los Angeles. Posing as career criminal Jack Roush, his only hope in proving his loyalty to them lies in the package he's carrying. Meanwhile, President Palmer deals with a curious press, including one particularly skeptical reporter; Kim tries to protect Megan from her father; and Kate Warner follows up on suspicions about her sister's fiance.

It's been a year since Jack lost his wife, and the emotional toll includes estrangement from his daughter Kim, who is now a live-in au pair for a troubled family. Jack is no longer with CTU, and no longer interested in that line of work - until he's summoned directly by President Palmer. The situation: terrorists have planted a nuclear device somewhere in Los Angeles and plan to detonate it within 24 hours.

Sherry Palmer makes a move in her discontent over David's faked death. Jack offers himself in exchange for his daughter's life and squares off against the Drazens. Nina, the second mole, makes a hasty escape from CTU headquarters that is delayed when Teri intrudes. David Palmer makes a final decision concerning Sherry.

Jack is forced to do the Drazen's bidding. CTU uncovers a lead on a second traitor. Kim witnesses the reunion of Victor and Alexis. Palmer deals with the advances of his affectionate speechwriter.

Victor offers a deal to the Feds. Palmer makes his own deal in order to help Jack after learning the elder Drazen is alive. CTU learns the latest on Kim.

Andre Drazen leads an incursion team to break out his father, the very-much-alive Victor Drazen. Teri returns to the CTU. Jack ends up on the wrong side of a hostage situation. Kim is interrogated and stands up to Melanie in prison. Mason, Nina and Tony run a rescue operation. Palmer wins the 11 primary states in an advance poll, and learns of his speechwriter's secret affections for him.

Jack continues his search of an apparently deserted area, finding a Class III detention facility run by Mark DeSalvo, who knows why the Drazens want the power cut. Mason heads back to interrogate Alexis Drazen. Rick tells Kim what to tell the cops. The country responds to Palmer's press conference regarding Keith.

Teri returns home in an effort to jog her memory. Mason and Jack investigate a lead at a wildlife preserve in Sargus, obtained by Palmer. Frank gets nervous after learning of Dan's death, because the lack of money puts a kink in his planned drug deal.

Jack is forced to the work with Teddy Hanlin, the ex-partner of one of the agents Jack busted, when he poses as Alexis Drazen to contact a man with information on the remainder of the assassination plot. Tony questions Mason's ethics dealing with the disappearance of Jack's family. Dr. Parslow diagnoses Teri before taking her home. Kim and Rick meet Dan's brother, Frank.

Jack and Mason implement a delicate operation attempting to place a tracker on assassin Alexis Drazen. Teri, still without her memory, runs across a familiar restaurant where she meets a man from her past, Dr. Phil Parslow. Kim contacts CTU, but refuses to disclose her whereabouts, turning instead to Rick. Keith procures proof of Carl's involvement in Farragamo's death.

Elizabeth Nash is brought into CTU for questioning. Jack finds his resources at work severely cut due to his probationary status. The safehouse is attacked after Nina leaves and Teri and Kim barely escape. Jack and Mason devise a plan that may give them an advantage against the assassins.

Palmer visits Jack at CTU and their connection is finally revealed. Nina supervises the transportation of Teri and Kim to the CTU safehouse. Someone inside Palmer's campaign is connected to the hitman. Jack and Palmer find a third target with information on the assassins.

Another assassin makes quick work of cleaning up the mess of Gaines' operation. Teri and Kim are taken to a hospital for examination. Palmer learns that planted evidence can implicate Keith in Farragamo's death. Regional Director Ryan Chappelle comes in to take Jack's statement.

In a hasty escape, Jack instructs Teri and Kim to go ahead to a safespot where he will meet them. Gaines and Carroll stalk Jack and Rick through the woods outside the compound. Palmer demands to make a public statement to the DA. Nina and Tony question Jamey's mother.

Jack meets Kevin Carroll again and dragoons him into taking him to his family. Rick helps Teri and Kim escape as Gaines' men evacuate the compound. Nina and Tony are interrogated by Alberta Green as to Jack's whereabouts. Palmer learns the fate of George Farragamo.

Jack poses as a limo driver to meet with a possible suspect. Rick gives Teri and Kim an advantage. A new acting director is brought in to take over the CTU. Drazen's Plan B is set into motion, eliminating the need for Jack's family. Teri suffers from abdominal pains.

Jamey dies after slitting her wrists. Jack requires Nina's help to escape a police perimeter in downtown Los Angeles. Teri and Kim secure a cellphone and call CTU. Drazen informs Gaines of a Plan B that may not involve him. Carl takes care of the evidence against Keith.

Jack escapes Secret Service custody and takes a waitress hostage. Tony and Nina threaten to bring Jamey's son in if she doesn't cooperate. Teri makes a difficult sacrifice to protect Kim. Sherry persuades Maureen Kingsley not to go public with the Lyle Gibson murder story.

Gaines orders Jack to a Los Angeles nuclear power plant where Senator Palmer is giving a public address, which Jonathan also attends as Martin Belkin. At CTU, Nina and Tony deal with Jamey, who is revealed as the mole. Teri is delivered by Kevin Carroll, formerly Alan York, to Gaines' facility, where she is reunited with Kim.

Gaines orders Jack to switch the keycard that Milo is decrypting with a decoy. Teri learns Alan York's true identity; Rick resolves to help Kim escape.

Kim and Rick bury the murdered Dan, Janet is moved out of ICU and the truth about "Alan York" is revealed. Jack finds Teri at St. Mark's, but their reunion is short-lived as Gaines uses his leverage against Jack.

Jack skirts Mason in order to break a cop-killer out of jail. Teri and Alan track Janet down at St. Mark's Hospital. Kim's kidnappers deliver to Gaines. Palmer confronts his son about the death of Lyle Gibson.

Jamey extracts an address from the keycard and Jack pursues it. Teri and Alan York are pulled over for speeding and Alan complicates the situation. District Director George Mason returns to lockdown CTU. Janet gets picked up by an ambulance.

As Kim and Janet temporarily escape their captors, Senator Palmer learns that his son may have been involved in the death of his daughter's rapist 7 years ago. Gaines finally gets Belkin's ID from Mandy, while Jack delivers the keycard to CTU.

Jack rushes to the aid of CTU Director Richard Walsh who comes into possession of a keycard and ends up in a shootout. Gaines encounters trouble acquiring Martin Belkin's ID from Mandy. Elsewhere, Kim realises the gravity of her situation.

Counter Terrorist Unit agent Jack Bauer is assigned to protect presidential candidate David Palmer from a potential assassination attempt. Unfortunately, his daughter has disappeared and someone within CTU may be involved. Mandy seduces Martin Belkin, a photographer headed for a meeting with the Senator.