Duke is ejected from the barn to find that six months have passed and a lot has changed in Haven. His sudden appearance suggests that the barn may not have killed Audrey as they thought, and new friend Jennifer has information that supports this conclusion. But can Audrey be found and returned to Haven?
A series of exsanguinated bodies have the police at a loss to explain the deaths. Everyone is angry at Nathan for shooting Agent Howard and destroying the barn, but it would appear that some are more angry than others.
A string of impossible kidnappings have the town in a panic, and it falls to Nathan and Dwight to find the children before they fall victim to the elements. Duke helps Jennifer learn to hear the voices from The Barn in hopes of finding Audrey.
Duke decides to leave Haven in the aftermath of dealing with Wade. But his escape is sunk as a trouble causing crushing pressure makes waves across town. The rules of the Troubles as we know them are crumbling--neither the troubled nor untroubled are safe. Amidst this chaos, Lexie and Nathan are forced to confront the truth of what they must do to save the town they love.
When Dwight is kidnapped, Audrey is shocked to discover that not only are the mysterious thugs from the barn behind it, but they have another captive--William. His memory wiped, he doesn't remember Lexie or the barn...and if that's not enough to hinder Audrey's investigation of the thugs' sinister plan, a vicious new trouble sweeps through the town, infecting Dwight, Nathan, and Jennifer with violent delusions. But as Dwight and Audrey uncover startling truths about the people of Haven, they realize these delusions may not be entirely off-base.
Audrey awakes in a trouble-free Haven to discover that no one remembers her--save for William, who is also immune to the Troubles. But the town's newfound peace is shattered when William reveals his terrible plan and Audrey must fight for the town she loves in a Haven where she's never existed.
A heart-eating monster from folklore attracts a paranormal investigating duo, the Darkside Seekers, to Haven--where they threaten to expose the Troubles to the world. With Audrey in the hospital, Nathan, Duke, and Dwight are left working overtime to protect the town's secrets, only to discover that the Darkside Seekers may be the least of their troubles...
Haven's troubles have never been more deadly than when William activates a trouble in a baby: with every cry, someone dies. Audrey soon learns this is a trouble she's failed to stop before...and with origins she herself had a hand in. As the victims pile up, Jennifer and the Teagues Brothers search for the Heart of Haven, the only place William--and now the Troubles--can be stopped.