While Nathan tries to return to Haven after Croatoan sends him away, Dwight defies the Guard to get the crystal back to Croatoan so that he can begin his experiments with Audrey at his side.moreless
Croatoan sends Duke to attack the group when they come up with a way to restore the aether core. Meanwhile, Dwight and Nathan both face terrible choices when Croatoan offers them what they've always wanted.moreless
The citizens of Haven gather at the police station to protect Audrey from Croatoan, but a traitor from within threatens their plans.
Dave and Vince try to track down Croatoan, while Dwight, Audrey, and Nathan convince a Troubled woman to bring back Charlotte from the dead. In North Carolina, Duke has a vision of Haven's future.moreless
The town's mysterious killer uses a Trouble to target Nathan, Dwight, Audrey, and Charlotte for death... and to stop them from recreating the Barn. Meanwhile, Duke and Seth search for the mysterious man who can drive the black tar from the bodies of sinners.moreless
After Duke releases a new wave of Troubles, Nathan and Dwight try to help the victims--and their victims--while Audrey and Charlotte look for the man responsible for the fog wall. Meanwhile, Gloria and Vince get Dave drunk in hopes that it will trigger another Croatoan vision.moreless
Using the ruse that they plan to elope, Cat and Vincent attempt to lure an unstoppable assassin out of town to protect love ones. Tired of police protection, J.T. asks Tess to help him track down a lead. Heather does her best to focus her attention on her new job.moreless
Duke makes a deal with Mara so he won't destroy Haven. However, Nathan needs Mara to cure Audrey. Meanwhile, Charlotte reveals the secret of Mara and Audrey's existence, and Dave and Vince try to find out the source of Dave's visions.moreless
When someone abducts Mara, Duke goes looking for her and crosses paths with Nathan. Meanwhile, Vince and Audrey try to find the proof they need to convince Dwight that Charlotte is not who she claims to be.moreless
As Duke threatens to explode from the Troubles that he contains, he turns to the only person who can help him: Mara. Meanwhile, audrey tries to deal with a new Trouble while her illness grows ever more debilitating.moreless
While Dwight tries to convince Charlotte that she shouldn't call in the army, Nathan and Audrey race to find a cure for the illness striking the Troubled people in Haven. Meanwhile, Duke frees Mara.moreless
Dwight befriends Charlotte Cross, the CDC doctor sent to Haven to investigate Dave's biopsy sample. But dancing bears and a mysterious infection threaten to expose the town's secrets to the world. Meanwhile, Mara convinces Duke that his friends are turning against him.moreless
After the newest Troubled person switches their minds, Duke and Nathan try to use the circumstance to their advantage to fool Mara. she soon realizes what they're up to, forcing them to risk everything on one last, desperate plan. Meanwhile, Dave and Vince learn more about the circumstances of Dave's adoption in North Carolina.moreless
Nathan abducts Mara on his own so that he can bring Audrey back out... and keep the Guard from killing Mara. Meanwhile, Duke's friend suffers from a fatal Trouble and he needs Mara to cure her... and himself, as the Troubles within eat away at him.moreless
While Duke's new Trouble runs rampant, Nathan sets out to capture Mara and turn her over the Guard in the hope that they can make her undo the Troubles. Meanwhile, Vince and Dwight disagree over the leadership of the Guard as Vince tries to deal with Dave's injuries.moreless
Mara, occupying Audrey's body, goes on a rampage to find a way back to her own world. Meanwhile, a new Trouble with an old history strikes the residents of Haven, and Duke suspects that he might be the one responsible.moreless
While Audrey draws ever closer to losing herself, the others try to open the door and send William back.
When Audrey won't accept that she helped create the Troubles, William unleashes a new Trouble-related curse on Haven.
The Darkside Seekers' presence in Haven threatens to reveal the existence of the Troubles to the world.
Lexie's attackers from the Bar reveal themselves and their hostage--William--in Haven. To stop them, Audrey must rescue William if she hopes to find out the source of the new Troubles plaguing the town.moreless
An ocean-related Trouble brings the crushing pressure of the depths to Haven, while Audrey and Nathan discover that the residents' Troubles are mutating.
Audrey and Nathan go after a Troubled who can enter people's dreams, while Duke hunts down his brother.
While the mystery of Lexie continues, she helps Nathan and Duke try to find a Troubled person who can petrify their victims.
An old wolf pack mate of Dyson appears out of the blue and needs Dyson's help recovering a stolen Mongolian Death Worm. Bo and Dyson team up once again amidst complications that force Dyson to reconcile with his past and all the mistakes he made.moreless