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Lucas summons the ghost of Albert De Salvo, better known as the Boston Strangler, in order to fight Merlyn. While Sheriff Buck makes himself scarce, Alberto befriends Caleb in order to get to Merlyn, kills a nurse and sets his sights on Gail as his next victim. Caleb may be the only one who can help save Merlyn, by conjuring up his special powers.

Ben's date, Cindy, is really an incarnation of Merlyn who is attempting to reveal to Ben the truth of her mother's death by taking to a place where she took care of abandoned children. Meanwhile, Lucas admits that he loved Merlyn's mother and wanted to marry her, but she refused to leave her husband.

Sheriff Buck allows Gail to use her dreams and visions to reveal more about her past, including her parents behavior, her father's abuse towards her, he mom's affair and an attempted murder of her father.

Sheriff Buck is upset when Selena reaches out to help Caleb. Also, Ben seeks a psychiatrists help to figure out why he has animosity towards Sheriff Buck. But when Lucas learns of Ben's visits, he takes matters into his own hands.

Caleb uses his new powers to try and kill Gail and inherit Sheriff Buck's estate. But when Ben and Billy dig up Lucas, he comes back to save Gail and his unborn child, setting up a confrontation between Sheriff Buck and Caleb.

Caleb and Selena go to Lucas' home to search for missing hospital files after being accused by the pharmacist as having taken them. Caleb seems to relish the fact he is Sheriff Buck's son and uses his new found powers when Lucas is "murdered." Sheriff Buck's final words for Caleb states that "the evil is passed."

Just as Gail informs Caleb that she is leaving Trinity and taking him along, she collapses and is taken to the hospital where she learns she is pregnant with Sheriff Buck's child.

A new bond is brought between Caleb and Sheriff Buck after he is brought back to life after being electrocuted. While on a fishing trip Caleb and Sheriff Buck encounter dangerous criminals who have kidnapped a corporate executive. Meanwhile, Caleb is given special sensory powers after learning a lesson from Sheriff Buck while trapped in the cabin.

When Dr. Crower treats the victims of a drunk driving accident, he conjures up memories of his wife and daughters deaths. Sheriff Buck pushes Dr. Cower over the edge by enticing him to start drinking again. Meanwhile, a strange neighbor's digging bothers Caleb.

When Artie, Ben's brother, robs a store in Trinity, Ben accidentally shoots him and then is taken hostage along with Sheriff Buck, Caleb and Dr. Crower at the hospital.

When a woman checks into the hospital claiming to be Sheriff Buck's mother, Dr. Crower grows more curious and decides to reinvestigate Merlyn's murder. She asks Dr. Crower to kill Sheriff Buck, but the tables are turned which creates unsettling results.

A mysterious bleeding illness has hit Trinity, which brings a new doctor to town. Sheriff Buck turns to Dr. Peele for help after Dr. Cower has a breakdown while trying to treat all the townsfolk hit with the plague.

Sheriff Buck must answer for all his past crimes when Merlyn returns as an avenging angel. Father Tilden's church is the scene of their chilling confrontation.

A radio host vows to ruin Sheriff Buck after he rejects his plea for help. A depressed Caleb wants to hold a party for the dead in order to give Merlyn a second funeral.

Merlyn borrows the spirit of an unborn child and reappears as a young girl as a means to experience the life she had missed out on, such as first love. After Caleb and the Sheriff figure out what has happened, Caleb realizes she must give back the unborn child's spirit if it is to survive, while Sheriff Buck wants her to remain on earth.

Trinity is invaded by four northerners who move into the boarding house and start a crime wave throughout town. Sheriff Buck has a deadly confrontation with the guests.

Lucas Buck is held under suspicion after two skeletons are found on his property. Jack Drey, a state policeman suspects Lucas of having a part in his adulterous brother-in-law's disappearance.

Gail seeks the truth about the night her best friend disappeared after driving off a bridge. She may have gone too far when she accuses Sheriff Buck as having a hand in her death after discovering that they had dated at the time of her disappearance. Meanwhile, Caleb learns about himself and honor when Lucas offers to help him win an archery contest.

Lucas Buck seeks a payback for a favor when he requests that Carter Bowen's teenage daughter work for him. But when he refuses, a series of events occur that unravels Carter's life. Also, Caleb receives help from Lucas on a school project, and Gail searches for answers about her mom.

Sheriff Buck will do anything to win Caleb away from Gail at his custody hearing, including calling in a favor from the judge overseeing the case and an attempt to destroy Dr. Crower. Meanwhile, a mirror given to Dan Trulane as a wedding gift has a strange attraction over his bride to be.

Caleb flees from Sheriff Buck and finds himself in an abandoned hunting lodge, where a dying man is being held captive. Merlyn's spirit confronts Caleb and encourages him to help the man. Meanwhile, at Merlyn's funeral, Caleb learns that his daddy is dead too and that his cousin Gail has come home to protect him.