Audrey is the only one who realizes that there are Christmas decorations in July that no one else finds unusual. The out-of-season decorations are only a prelude to the bizarre bisection of a surfer and a series of escalating disappearances of people who no one can remember except Audrey.
Haven's dead rise from their graves to reveal the town's secrets... and those of Audrey, Nathan, and Duke.
With Nathan's help, Audrey finally locates Lucy Ripley and goes to confront her. Meanwhile, Duke and Dwight join forces to discover what Duke's father Simon left for his son.
Audrey and Nathan take a search party into the woods to find a missing boy whose disappearance may be connected to the Troubles, and receive some unwanted help from Driscoll.
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 banker hides a dark secret that connects him to a killer hiding in Haven. Meanwhile, Duke helps a young runaway and Nathan discovers that his job is at risk.
While investigating a drowning, Nathan and Audrey check out a community where a child has gone missing and discover that they hide a Troubled secret. Meanwhile, Duke recruits Evi to help him find out what Driscoll knows about the death of his father.
Audrey finds herself trapped by time when a repeating cycle of events involving a runaway car lead to the deaths of her loved ones.
Audrey and Duke invite Chris and Evi along to a wedding at an isolated home... and discover that one of the guests is apparently a Troubled individual with the ability to control plant life.
While FBI agent Audrey pursues the investigation into the fake Agent Howard, Nathan and Audrey deal with an outbreak of machines with minds of their own... and a desire to kill.