Six months after the barn disappears, Duke mysteriously reappears in Boston. He meets a Troubled woman who can hear voices from the Barn, who reveals that Howard told Audrey another way to end the Troubles. They go back to Haven and discover that things have fallen apart in the last six months. Meanwhile, a man named William approaches a bartender named Lexie... a bartender who looks just like Audrey Parker.
Rob Moir -- Crow Stew, Boris McCutcheon -- Idiot Lights, Patrick Watson -- Lighthouse, Niall Toner -- Lonely Souls & Broken Hearts, Stuart French -- Long Gone Daddy-O, Ludwig Van Beethoven
-- String Quartet Opus 130, 4th Movement, Jody Reynolds -- Two of a Kind
Nathan tries to balance his responsibilities to Haven with his search for Audrey. While Duke tries to reassure Jennifer and deal with his older brother, he and Nathan investigate the case of a Troubled person who is incinerating people into ash. And in Texas, Audrey learns something about who she is.
Songs: Adam Seymour -- Lick It Up, The Jody Reynolds Band -- Mean Dirty Streets, John Lindsay Phillips -- New English Magazines, John Van Eps -- Promenade
While Nathan and Dwight investigate a series of murders involving exsanguinated bodies, Jennifer starts hearing the voices again and Dave and Vince take a trip to New Hampshire. Meanwhile, William tells Audrey what the bar really is, and why she must leave.
Songs: Dan and Adam Skinner -- Just Me and the Open Road, The John Reynolds Band -- Mean Dirty Street, Hans Olson -- Something Bad, Jeremy Sherman -- Texas Time 2
While Nathan and Dwight investigate a series of inexplicable child abductions, Duke helps Jennifer focus so that she can learn more about Audrey's location. Meanwhile, in the Bar, William tells Audrey how she can escape before the place between realities implodes.
Duke and Vince come to an arrangement on a way to kill Nathan and end the Troubles, when Audrey comes back with no memory of herself or her feelings for Nathan. Meanwhile, a Troubled person leaves a trail of mysterious suicides.
Haven residents see mysterious countdowns on their phones and die of rigor mortis. Duke helps Nathan with the investigation while trying to keep him away from Lexie before he can realize she's really Audrey. Meanwhile, Jordan pursues her own method of ending the Troubles.
Songs: Brooke Manning -- There is Blood in My Body
A new Trouble emerges when people suffer from the injuries caused in their dreams... and some of the injuries are fatal. Meanwhile, Duke searches for his brother Wade and the Teagues discover a mystery behind Jennifer's adoption.
Songs: The Glorious Sons -- Baby, Sam Taylor -- Loaded Gun
A Trouble-free family manifest the curse for the first time, and their Troubles threaten to destroy Haven. Meanwhile, Nathan and Duke both come to decisions about their lives, and the Teagues find a journal describing an ancient Indian legend.
Songs: The Careful Ones -- Slow Dance on Broken Glass
A wave of paranoid delusions sweep over the people of Haven, while Audrey and the others interrogate the two men from the Barn who followed her through the doorway. They are searching for a strange box, and William seems to be the key to unraveling the mystery.
Audrey finds herself in an alternate reality where the Troubles never occurred in Haven. However, the seemingly perfect reality become less so when she discovers that William is also trapped there... and will stop at nothing to get back.
Songs: Donovan Woods -- Taft
A pair of conspiracy theorists, the Darkside Seekers, come to Haven to investigate a murder and get more than they bargain for when they uncover the Troubles. Meanwhile, Audrey and Nathan deal with the aftermath of William's revelations.
William attempts to force Audrey to embrace her past by presenting her with an impossible choice: give someone a Trouble or let hundreds die. Meanwhile, Jennifer and the Teagues track down the "heart of Haven" so that they can banish William from the town.
Songs: Emily Hill -- Nobody Else But You
Audrey and Nathan try to come up with a way to capture William, while Audrey resists the pull of her past self. Meanwhile, Duke begins suffering from a mysterious ailment and the group learns who the fourth person of the figure is.