A single day keeps repeating for Audrey, who finds a deadly accident linked to the phenomenon.

When a Troubled individual unleashes a rotting plague inside the police station, the new Chief orders a quarantine... trapping Audrey and the others inside. Meanwhile, Duke confronts Evi about her betrayal of him.

A vigilante stalks Haven's criminals, rendering poetic justice. Meanwhile, Nathan grows closer to Jordan as he attempts to infiltrate the Guard, and Audrey learns more about the bolt-gun killer that is stalking her.

A Troubled war veteran sends Duke and Nathan back to 1955. Meanwhile, in the present Audrey tries to deal with an altered timeline where Driscoll's men have taken over the town.

As charred bodies are uncovered around Haven, Duke must refocus Nathan to solve the case at hand.

Nathan and Lexie hunt a trouble that attacks Haven's citizens in their nightmares; Duke deals with the nightmare his brother has become.

Audrey finds herself in a different Haven where troubles don't exist.