While the mystery of Lexie continues, she helps Nathan and Duke try to find a Troubled person who can petrify their victims.
Nathan gets a new partner as he tries to track down a Troubled person who can change its victims' personalities.
Children in Haven begin disappearing and the cause may be related to an ancient legend. Meanwhile, Duke and Jennifer try to pinpoint Audrey's location.
While Duke tries to convince Wade to leave Haven, Nathan and Dwight investigate murders where the victims are drained of their blood.
When a Troubled immolates the citizens of Haven, Nathan and Duke have to take time off from their search for Audrey to deal with it.
Six months after the Barn disappears, Duke reappears in Boston. He meets a woman who claims that she can hear the voices from the Barn, and takes her back to Haven to try and find Audrey. The Troubles haven't ended, and the townspeople blame Nathan, who is living as drifter because the Guard wants him dead. As they deal with a Troubled person whose ability has come back, Audrey resurfaces... as a bartender named Lexie.moreless
The day is here, the barn has arrived. But Haven has still some surprises left. Some things come to a head, answers are given and new questions arise. The departure isn't going as planned and the Hunter storm shows no sign of letting up until Haven is wiped from the face of the earth.moreless
Audrey and Nathan help a Troubled girl who the Guard wants for their own purposes. When Jordan reveals her true colors, the officers learn the truth about the Barn and Audrey's destiny... and who the real Bolt Gun Killer is.moreless
Audrey, Duke, and Tommy must find a wounded Noelle before sunset or lose their chance of bringing back Nathan from the dead. However, one of them doesn't want Noelle to succeed.
Audrey gets a lead on the location of the Colorado Kid and heads west with Duke to investigate. Meanwhile, Tommy and Nathan investigate several Troubled incidents involving the resurrection of the dead.
Audrey and the others investigate a Troubled event which takes them to a supposedly haunted house... which traps them inside.
A female vigilante appears in Haven and starts attacking criminals--including Duke. Meanwhile, Audrey tries to get a lead on the bolt-gun killer and Nathan vows to do anything to infiltrate the Guard.
Haven is plagued by a mysterious series of ocean-related deaths... that take place on dry land. Meanwhile, the Teagues investigate Tommy's background, Duke insists on helping Nathan and Audrey with their investigation, and Nathan meets with one of the tattooed people.moreless
Gunter is recruited by the mob as a double agent, and he learns that Martine is involved with Racken.
Gunter learns that someone is manipulating the mobs and start up a war that could tear the city apart.
Gunter tries to reunite with Martine while a mob war rips apart the city.
Hitman Gunter Vogler is shot in the face and receives a face transplant from the last cop that he killed. Now posing as the dead officer, Gunter works for the Brüteville police in return for the chance to get revenge on his boss, who set him up.moreless
Gunter looks after a homicidal boy who reminds him of himself, but soon discovers the kid is in over his head.
Gunter and Karl investigate a priest's suicide and a mobster involved in a major conspiracy.