Sarah learns of some unsettling information about her past from Tom Winston, which leads her to believe she knows the next target of the Executioner.

Convinced that Sarah is The Executioners final target, Tom Winston escapes from prison. Also Sarah discovers that Dylan knew about her past prior to meeting her.

A disturbing secret from Sarah's past confirms her belief that the police have arrested the wrong person for the murders.

Sarah blames herself when another disturbing murder occurs. Meanwhile Allison has mixed reactions to Dylan's TV commentaries about the killings.

With the Widow's final victim nearly in her clutches, Kenneth's time is running out; however, upon revealing the killer's identity he grapples with how to bring justice to the victims.

The pressure gets to Israel, who admits to her and seven other involvements in Margaret's death; Kenneth secures the suspects, freeing only Israel to operate on a friend of Regina's - inadvertently putting her into the Widow's clutches.

With Kenneth's list of suspects either jailed or buried, he sets his sights on the sly magician Georges, who is slowly losing his grip on reality.

The serial killer confesses to another camper, but the rest of the stranded survivors are still in the dark as final twists and truths are divulged.

The Widow's latest victim is found on Valentine's Day, dragged to death behind a horse and made up to look like Cupid; a torn piece of the Widow's weeds sends Kenneth and Regina off on a hunt; Salomé entertains bidders for Verdi.

The Executioner plans one last act of retribution while Sarah is comforted by Cam after Dylan's dishonesty.

The gruesome past and false identity of a commune member is discovered, although it may be too late to save the fellow camper they have kidnapped.

Desperate to discover the identity of the killer preying on them, the remaining survivors reluctantly conduct a mock hearing to learn the truth.

Misinterpreted evidence points everyone in a false direction, while one camper finds evidence that makes him question the motive behind the slaughter.

With the identity of the Druid revealed, the few remaining survivors inside the apartment building must make a last-ditch fight for their lives.

The Widow strikes again, and Kenneth Rijkers begins connecting the killings to a 12-year-old mystery, while Basil Garvey, a business oligarch, pulls a number of strings to control the investigation.

Enid's newspaper declares another Widow murder; panic rises, and Kashtinsky gets high to keep focused; Eddie tries to flee, but Basil reminds him that he owns him; Kenneth uncovers proof that links the victims to the killing of Margaret Mehar.

Sarah receives a gruesome package at her new gallery. The Executioner exacts justice on citizens of Waterbury. Sarah attempts to decipher a message in her parcel. Sarah's grandmother pleads with her to leave town.

Sarah believes the killer is using the seven deadly sins as part of their plan and is disappointed by the police chief's lack of responsiveness. Unfortunately Sarah's attempt to investigate the murders leads to misfortune.

Five years after concealing a murder, guilt-stricken summer camp counselors return in midwinter to the scene of their crime, now a utopian commune.

After a body is found and a guest vanishes, both groups discover they're trapped at the camp with communication to the outside world cut off.

As the list of victims continues to grow, the number of possible suspects narrows and the two groups are forced to cooperate despite mutual suspicion.

The histories of several characters unfold in flashback, revealing surprising connections, while an innocent hiker is pulled into the unfolding drama.

The Widow sends a nasty treat to Basil and friends, which sends Kashtinsky over the edge; the Botticelli sisters arrange for Verdi to have their portraits taken; Georges Rondeau, the prime suspect in the murders, preys on Regina.

Angel and Dan desperately try to escape, Roberta and Pujit get too close to the Druid, and Saadia grows closer to Connor in the hours after the party.

The Druid kills again as Amy recalls her role in Kit's death, Roberta questions multiple witnesses, and plans get underway for the solstice party.