Watch CSI: Crime Scene Investigation Online - Full Episodes

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Mysterious circumstances surrounding the death of a fourteen year old baffles the CSIs.

While Rascal Flatts is in town for a concert, the team investigates whether a band member was killed by foul play or not.

The CSIs investagate the deaths of a pair of illegal street racers.

The CSI investigates the mystifying death of a former pro golfer whose allegiance to the game might have cost him everything.

The CSIs investigate a medical mytsery that involves dumping organs in a wildlife refuge. Also two secretaries who tried to steal a man's Wallet and ATM pin number with a scam end up dead.

The CSIs dig to find the truth about how a recent shootout at a gun store might connect to a young woman who may have committed suicide.

It's a full moon, and the nuts are out. Three of the CSI guys "abduct" the hapless Henry to celebrate his birthday at a remote rib place, not realizing that the place was closed by the health department months ago. But their outing has yet more disasters in store, including the discovery of a corpse with a raccoon stuck on his face.

The CSIs investigate a murder at a bowling alley after a critical piece of evidence is revealed during a bowling tournament.

The investigation into the human trafficking ring continues, but it's a race against the clock.

The CSIs discover that two apparently unrelated crimes are actually parts of the same twisted revenge plot.

After a beloved college football coach is found dead and his house drenched and spattered with his blood, the CSI team hunts for the killer who didn't find Coach Jimmy lovable at all.

When a policeman kills another officer, the CSIs must look to the evidence to determine if the shooting was premeditated or an accident.

The team investigates the murder of Jason, a troubled computer geek working at a low-level casino support industry job who lures a colleague, Paulie, into a dangerous plan to make a working stiff's dream come true.

The CSI's investigate a case where a killer's son is arrested on suspicion of murder. However, they have to treat the suspect like a normal one, even though his father is a notorious killer.

When Sara unexpectedly returns, the CSI team comes together to investigate the death of a famous young actress killed in a dubious traffic collision.

In the 9th season finale, the team investigates murders that seem to be linked to some sort of scam involving unusual poker chips from a bygone casino. Also, Ray has to use lethal force for the first time on the job.

The team investigates the death of an undercover cop, who destroyed a motorcycle gang, at a biker bar. The investigation reveals that he was killed by the gang because his real identity was exposed, but that's not the big problem. Evidence starts to link Brass with the victim's widow.

While investigating several random deaths around the city, the CSI's start to think that an odd outbreak is the reason for the deaths. Later on, they find out that if it isn't under control by anyone, it might lead to a big citywide epidemic.

When a murderer claims that the CSI team used faulty evidence when the verdict was reached, Catherine re-investigates the case, which happens to be one of her very first cases as a CSI.

When an actor is murdered at a science-fiction convention, Hodges and Wendy run into each other while investigating the crime.

The CSI's investigate a sky diver paralyzed after free falling. As the investigation moves on, the team finds out that he is linked to similar murders of two wealthy men.

The CSI team investigates the death of a Mexican wrestler and the investigation makes them dive into the world of wrestling.

Langston and Riley find themselves taken hostage during a shootout in a typically calm and quiet Las Vegas community.

The CSIs are called to a murder at an all too familiar hotel where Nick has difficulty putting together the pieces of three separate murder investigations that took place in the same place.

The CSIs investigate three different crimes. Though they seem to be unrelated at first, each case's evidence brings together a common link.

As Langston testifies in a trail, new evidence presented leads the CSIs to reopen the investigation into a Congressman.

A murder at a fast-food restaurant is the case investigated by Nick and Langston, however, the evidence is hard to collect when it is coated in cooking oil.

When an undercover FBI agent is killed, the victim's partner seaks to the CSI team for help to catch the killer.

The first day on the job for Dr. Langston turns from bad to worse when a simple burglary case quickly overlaps with a complicated arson and homicide case.

The CSI team is shocked and saddened when, after working with Dr. Raymond Langston (Fishburne) on the "Dick & Jane" murders, Grissom announces that his time as a CSI has come to an end and offers Langston a permanent position on the CSI team.

The team is called out to a triple homicide to find three bodies hacked to pieces with an axe laying near the scene.

The team discovers a shocking link between the death of a popular singer and a singer from 50 years ago.

The CSI teams investigates the death of a woman, married to a man who committed murder twelve years ago. In the meantime, the fate of Natalie Davis is being decided...

A gangster style shooting in Koreatown leaves a man and woman dead and no witnesses will come forward. The prime suspect appears to be an Asian gang and a young boy, now missing and is part of a clinical trial, may be a key to the crime.

When the CSI team investigates a case involving the world of domination, Grissom pays a visit to Lady Heather to help find some answers.

During the course of an investigation, the CSIs discover that their victim, a young woman who was murdered and found with several different blood types in her system, is the daughter of a wanted criminal.

After several victims are found dead while performing normal, everyday activities, the CSIs must find the reason as to why each of the victims remain upright after dying.

When a hypnotist begins to use her powers to rob banks, she winds up being the lead suspect in a CSI murder investigation.

While mourning the death of one of their own, Sarah returns as the team comes together to uncover who shot Warrick in the alleyway.

Warrick is the main suspect when an infamous Vegas gangster is found murdered. As the team investigates whether or not Warrick committed the crime, even Warrick himself is unsure if he killed the gangster or not.

The CSI's investigate when a Hollywood diva sitcom star is murdered while filming an episode in Las Vegas.

Grissom and the CSI team find several victims with green blood, leading them to assume each of the murders are connected in some way.

An incarcerated criminal lends Brass and Nick a hand on a case involving two murders that occured in the same appartment building.

The violent death of a 3-year-old girl takes a personal toll on Catherine as she searches for the victim's killer.

Grissom and his team come down with the flu as they are called in by DDA Klein to look into the deaths of several witnesses in a grand jury case against a violent Las Vegas gang.

The CSIs look into two murders that occurred during a bull riding event that may be connected to an illegal bull breeding ring.

The CSI investigate the murder of a socialite with ties to illegal dog-fighting. Meanwhile, Warrick tries to prove he did not have anything to do with the death of an exotic dancer.

Warrick's addiction begins to get the best of him as his investigation into the Vegas mob results in him being a prime suspect in another murder case.

Hodges states fake murders in the lab and gives his co-workers a chance to be a CSI for the day. However, Hodges has ulterior motives in doing so. Meanwhile, the CSIs comfort Grissom in Sara's absence.

In the final episode featuring Jorja Fox, a suspect from Sara's past reemerges, causing her to question her future with the CSIs.

Jack Malone of the 'Without A Trace' FBI team joins Grissom and the Vegas CSIs as a missing boy he is searching for may be the body the CSIs are investigating. The crossover concludes in the episode of Without a Trace following.

Grissom and the CSI team go behind the scenes at an adult horror film studio following the murder of a lead actress.

Grissom and his team of CSIs find the body of a man who died due to strangulation by hanging whose body appeared to be that of a woman.

The CSIs are called to investigate when an entire family is murdered, except for the daughter who claims to be possessed by the devil.

The CSIs investigate two bizarre cases -- one involving the death of a go-cart racer and one involving a murder at a hip, new restaurant.

Sara's fate hangs in the balance as the CSIs rush to find out whether or not she survived.

The team gets closer and closer to identifying the miniature killer, but when Sara goes missing, Grissom must expose their relationship to the team in order to save her life.

Grissom is reunited with Lady Heather during an investigation, much to Sara's chagrin.

The CSIs investigate the murder of a woman who is a part of a UFO club that believes aliens have mated with humans for several generations in order to conquer the world.

The CSIs must determine which of several life-threatening actions against a washed-up boxer lead to his death.

When Grissom and the team head out on cases, Hodges, Archie, Henry, Mandy and Wendy team up to try to solve the miniature killer cases.

A high profile man is murdered in his limo and after investigation, Greg learns that the victim had connections to a man he killed in self-defense. The CSIs uncover that the brother of the man killed in self-defense may be behind the limo murder.

While processing a murder scene, Sara is haunted by the last words and eyes of the sixth victim.

Grissom and his team are discouraged when they find a pool of blood as they begin investigating the disappearance of a high school basketball star and his cheerleader girlfriend.Grissom's quip that the young lovers may have run off to Mexico is soon quashed by the discovery of drops of blood by Ryan's vacant parking spot at the school. After finding a letterman jacket and cheerleading sweater in the field house and a pool of Ryan's blood nearby, the team tries to determine what went awry.

The miniature killer sends a message to Grissom -- another miniature that foreshadows the death of a woman and her cat. With less than 24 hours to prevent the murder, the CSIs work quickly while Grissom regrets holding up the investigation by going on sabbatical.

Grissom returns to the lab following his teaching sabbatical. Keppler tries to keep his connection to a double murder case a secret and keep his dark past from his CSI co-workers.

Nick and Keppler are sent deep into the bizarre world of the black market body parts sales after a body is found burned with its organs removed. Meanwhile, the other CSIs look into the the death of a wealthy woman killed in her home.

Keppler persuades Catherine to help him fake a crime scene and deceive their colleagues in a controversial plan to catch the west coast's biggest illegal drug supplier, who is the leading suspect in the murder of an anti-drug assemblyman who was gunned down in the desert. Keppler concocts the plan when the suspect disappears and his trail grows cold after several weeks.

With Grissom away at his new teaching job, the rest of the team has difficulty adjusting to Michael, their new team leader who's filling in for Grissom. Under their new guidance, the CSIs investigate the murder of a young girl who may be the latest victim of a serial killer who has been on the loose and killing since the 1970s.

Catherine testifies in a murder trial in which a man is accused of murdering his own mother three years ago, but the suspect is found not guilty. Catherine, however, believes he did commit the crime and that he may also have killed two other people, so she sets out to find the other victims. Catherine's probe leads to a small Nevada town where an elderly woman and her daughter were fatally stabbed and shot three years earlier. Back at the lab, Grissom prepares to leave on a four-week sabbatical.

Grissom is called to the scene when a poultry processing plant employee is found dead in an electric stun bath that is used to electrocute chickens. The team is shocked to discover a mini-replica of the crime scene, a calling-card similar to the replicas found at two other homocides. Meanwhile, the team looks in to the death of a man and an woman who were found stuck in cement at a construction site as well as the death of an elderly Russian woman.

The remains of Mickey Dunn, a wanted Las Vegas mobster who disappeared in the mid 1970s, are fished out of Lake Mead with a bullet hole in the head. Soon afterwards, a wheelchair-bound man is murdered and a photo found on his body shows the victim with Dunn and three other men. Dunn and the victim have Xs on their faces. It quickly becomes apparent that the other three men may also be targets.

Identical twins are both found murdered on the same night, leading the CSIs to investigate whether or not the two murders have a connection.

The CSI team investigates the death of a retired cocktail waitress with serious cancer. Did her recovering junkie nephew or her drug dealing neighbor murder her for her pain medicine? That's the working theory until the nephew finds a miniature crime scene on his aunt's porch - an exact duplicate of the crime scene and similar to a diorama they received earlier. Elsewhere, a coroner's inquest is called to examine Greg's conduct in the events that led to the death of Demetrius James and Greg receives an unpleasant surprise at the end of the episode.

Two young boys go missing and Grissom must get into the mind of a local sex offender who emerges as the primary suspect. In order to find out who the real abductor is, Grissom is forced to ask the local pediphile for help. However, the task of finding the culprit becomes more complicated than Grissom and the rest of the CSI crew ever expected.

The CSIs investigate the death of Charlotte Sommerville who was found crucified in a church. The case takes a twist when the CSIs uncover that Charlotte was having an affair with the church's priest and a car dealer that Charlotte knew in high school.

An innocent man is attacked and beaten to death by a man in a black cape. When the CSIs investigate, they find that a similar incident took place only moments earlier. The incidents continue to occur and the crew follow the trail of evidence hoping to get to the next victim before it's too late. But when Greg interrupts a beating in progress, he is forced to make a decision that will change his life forever.

Donna, Rebecca, Jack, Lou and Ray all share a similar characteristic -- they're all dead. The team splits up to solve their murders: Brass and Catherine pair up to take on Donna's case, a former cop who was working as a bodyguard; Nick and Greg investigate Jack's death, who was an Iraq veteran that was killed in front of his wife and daughter; Warrick and Sofia take on the case of Rebecca, a former supermodel who died while hiking; and Grissom and Sara pair up to look into the deaths of Lou and Ray whose bodies were found together in Lou's garage.

Grissom's fascination continues with a miniature replica of the crime scene he's investigating where a rock star was murdered. With the clues that the replica provides, Grissom works to find the killer. Meanwhile, Catherine finds herself in danger and continues to hunt for the person responsible.

A Cirque du Soleil dancer is killed during a show which sends the CSI crew backstage to investigate her murder. Meanwhile, after Catherine and Nick go to a club to watch a performance by John Mayer, Catherine has to rely on her CSI skills to uncover who is targeting her family. Elsewhere, Grissom is puzzled when he receives a mini-replica of a crime scene he is investigating.

In the aftermath of the shooting, the CSI team holds vigil near the bedside of their teammate who may not survive. Meanwhile, the CSIs investigate the scene of a man who was decapitated by a train. After examining the evidence, they discover that the accident was really a cover up for another murder.

The suspect in a murder investigation leads the CSI crew on a chase through one of Las Vegas's busiest casinos. After taking a hostage, the man locks himself in a guest room, and the CSIs have to rush to uncover if the man worked alone or not. When their time begins to wind down, one of the CSIs decides to risk their life to negotiate the safe return of the hostage.

The CSIs work to find the real story behind the death of a high-stakes gambler and known ladies man. As the case unfolds, they soon find that the victim may have been an unwilling participant to one of his own fantasies, which was created for him to live his dream weekend. The evidence starts to reveal that once his fantasy clashed with reality, things became deadly.

A wealthy defense attorney is murdered at her son's wedding. The case seems to be going fine until all the evidence and Nick's car are stolen, compromising the investigation. The team assume that the car and evidence robberies are connected, but when they uncover new evidence, the team is able to piece the crime together.

The CSIs are sent to the scene when three teenagers are murdered during the promotion of a rapper's new album. The team find themselves in a world of rappers where artists will use any means necessary, including murder, to get to the top. They soon suspect that Drops, J-Lady (both rappers), or Marcus, an auto dealer, will lead them to the answers they're looking for.

As a psychic is telling the futures of two young women, she begins to see her own murder taking place. When the psychic is found dead, it's up to the CSIs to determine the cause of death. Greg, who has a family "occult" history, thinks that the woman's death may be a result of greater forces, but Grissom is reluctant to believe.

When the body of a young girl is found in a high school, the CSIs are shocked when a twelve year-old classmate confesses to the savage murder. But the CSIs are led to believe that the girl is covering for her brother, so they turn to the evidence to cast some light on which sibling committed the brutal murder. However, the evidence leads them to think that a completely different scheme led to the girl's murder.

A camera crew from a reality series follows the CSI team during the first 48 hours of an investigation involving an upscale real estate agent found dead in her glamorous high-rise apartment. The cameras reveal the intricacies of how the CSIs piece together the case, but also delve into how each member of the team deals differently with the emotional and physical demands of their work.

The CSI team explores the case of a man found stuffed down the chimney of a previous suspect's home. The CSIs determine that the body they have found was burned before it was dumped down the chimney, leading them to believe the murder was pre-meditated. During the processing of the home, Catherine and Warrick realize that this is the same address of an unsolved homicide of a young female teenager from a year ago, and re-open the investigation.

A woman's bald, branded and emaciated body is discovered dumped in the desert. The investigation soon reveals that the victim is the estranged daughter of Grissom's one-time friend Lady Heather. The probe also reveals that one of the dead woman's eyeballs isn't her own and belongs instead to a convicted sex offender. When Grissom confronts Lady Heather, she isn't too cooperative, but later she provides Grissom with some astonishing evidence.

In a CSI first, a crime will be shown from the killer's perspective. The CSIs investigate two deaths, both linked to the same suspect. As the evidence starts to overlap, the CSI team begins to move in on the murderer.

Grissom and his team investigate the shooting death of a young man at a lavish party for a millionaire. Las Vegas's most influential citizens, including Sam Braun, become suspects.

Warrick, Sara, and Greg investigate the death of a young motocross racer whose girlfriend's relationships have a tendency to end in tragedy. Meanwhile, Nick and Catherine investigate the death of a woman who was run over by a car. After fruther investigation, Nick and Catherine discover that the woman, Sandra Mullins, may have ties to Walter Gordon, the man who kidnapped Nick.

The CSIs investigate the murder of a man who has Hypertrichosis, "the human werewolf syndrome", which makes him grow excessive body hair. After further investigation, Stokes and Willows uncover a secret which ends up being the key to solving the crime.

The lack of evidence in a reported kidnapping case leads Grissom and his team to wonder if the case is fabricated. Without substantial evidence, the CSIs begin to wonder if a kidnapping actually took place at all. But when the child turns up unharmed at a local convenience store with a couple claiming to be his parents, Grissom and his team must use what little forensic evidence is available to solve the mystery of what actually happened to the first mother's son.

The CSIs investigate the unusual death of a man found dead in a dumpster on Thanksgiving night. Grissom and his team must take their clues from what the man ate in order to identify his cause of death, which leads them into the world of competitive eating. Meanwhile, Nick and Sara investigate the suspicious death of a couple attacked and killed by their seemingly sweet dog.

The CSIs sift through the overwhelming evidence from a shootout with drug dealers in order to determine who is responsible for the death of a police officer killed during the incident, on the conclusion of a two-part episode. When a wild police chase of drug smugglers through the streets of Las Vegas leaves an officer killed, the CSIs suspect that the cop killed in the line of duty was shot by one of his fellow officers.

The CSI team investigates the death of a police officer during a wild Vegas shootout that may have been caused not by the criminals they were pursuing, but by one of his fellow offi