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.

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.

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

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.

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

On the first anniversary of a mysterious slaying, the masked killer responsible strikes again, butchering one of the earlier crime's eyewitnesses.

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

Connections to Kit are revealed in flashbacks, while a couple's secret affair is exposed via social media and another slaying strikes the community.

Sarah finds herself at the center of a series of copycat killings and visits the man who murdered her parents in prison and he imparts a cryptic message.

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

Attendees of the solstice party are stalked by the Druid while someone engineers a violent confrontation in the basement between Angel and Dan.

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.

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.