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

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

A deadly sea trouble threatens to crush the town.

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

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 fights to remain herself as she tracks down William to sever their ethereal connection

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.

Duke struggles to accept Jennifer's death; Nathan searches for some shred of Audrey in Mara's cruel personality; Dwight shoulders the heavy burden of holding Haven together.

Nathan makes a desperate play to protect Mara from the furious citizens of Haven, leaving Dwight and Duke to deal with a deadly trouble that threatens to burn the town to the ground.

When Vince and Dave travel to North Carolina, their probing of Dave's past uncovers a body-swapping problem back in Haven.

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.

Duke’s roiling troubles and a new threat to Audrey force them each to seek the help of potentially dangerous allies.

When a trouble drives Haven’s citizens to pursue their more primal desires, it takes everyone to keep Haven from coming unglued-distracting them from the menacing storm that is brewing.

As Mara'a endgame becomes clear, Nathan and Audrey pursue a plan to stop her once and for all.

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.

Charlotte and Audrey work on their new plan to eliminate the troubles, but something seems to be thwarting their attempts, and it's up to Nathan and Dwight to get to the bottom of it. Meanwhile, the Teagues brothers search for the mysterious serial killer who's stalking the streets of Haven.

Nathan receives otherworldly help as he works to track down a terrifying killer; and Duke reaches a crossroads after he has an alarming vision of Haven's future.

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.

Hope of ending the troubles begins to fade as the heroes struggle to rebuild the Barn in the face of mounting obstacles. And while Dwight is tempted by a surprise gift, Nathan finds himself considering a devastating sacrifice.

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.