Audrey and Nathan learn of a ghost story that wanders the Haven clinic and takes the lives of sick people before their time.

The residents of Haven have their worst fears come to life while Nathan's "trouble" seems to vanish.

The town's docks start attacking people while the other Audrey Parker probes Audrey's identity crisis.

When a deadly series of electrocutions occur around town, Audrey and Nathan investigate the cause

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.

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.

While Nathan and Duke set aside their differences and try to find Audrey, a Troubled individual is plagued by alien abductors.

Audrey and Nathan encounter a bizarre series of deaths suggesting a serial killer, with a unique “trouble”, is at work in Haven. Meanwhile, a Boston cop tries linking the town's latest body to similar cases.

On Halloween night, Audrey, Nathan and Duke become trapped inside a haunted house.

While Audrey and Duke track down the Colorado Kid's parents, Nathan and Tommy investigate Troubled incidents involving the resurrection of dead for payment.

Duke is ejected from the barn and rescued by a young woman; Audrey is missing and the Troubles are worse than ever.

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

Nathan, Duke, and Lexie find themselves in a race against time to find the troubled person responsible for turning people hard as stone.

Audrey believes the thugs from the barn are holding William as a hostage.

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

The Seekers follow a monster to Haven; their presence threatens to reveal the town's troubles to the entire world.

William is determined to convince Audrey of the truth behind her origins; a seemingly unstoppable curse is unleashed.

Audrey, Nathan and Duke's victory over William feels hollow as they deal with the aftermath of Duke on death's door, Mara in control of Audrey's body, and a strange trouble supernaturally silencing citizens all over town.

When Audrey and dozens of Haven citizens are affected by a mysterious illness, the symptoms threaten to expose Haven’s secrets to a dangerous newcomer.

Haven’s heroes are torn over how to deal with an inquisitive CDC scientist, who could expose the secret of the troubles to the world, but may be hiding her own dark agenda.

Dwight struggles to maintain order when Duke's trouble wreaks havoc around town; at the same time, Audrey and Charlotte work together to drive away a mysterious fog that has everyone trapped in Haven.

Plans for building a new barn are complicated when an old trouble brings the Haven Police Station to life. It's up to Audrey and Nathan to find a way to regain control, but their efforts are hampered when a mysterious killer leaves a wake of bodies right under their noses.

Nathan struggles to return to Haven as Dwight reconsiders his future in the series finale, which also finds Audrey coming to a terrifying decision about how she might finally save the town from Croatoan.