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.
Nathan and Dwight race to rescue Audrey from Croatoan, but the consequences of Duke's dark destiny wreak havoc on their plans. Meanwhile, Vince contemplates an unusual sacrifice.
While Duke tries to convince Hallie to reopen the thinny, Nathan tries to escape from the Void where he and William are trapped. Meanwhile, Dave must consider making the ultimate sacrifice to stop Croatoan.
Nathan encounters an old adversary after entering the terrible Void; Audrey and Duke deal with the threat of a newly troubled person who wants revenge; at the same time, Dwight tries to help Vince free Dave from Croatoan's grip.
Nathan and Vince travel back to the year 1983 in order to discover Croatoan's origins in Haven; at the same time, Duke finds himself in grave danger after being apprehended by a mysterious foe.
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.
Dwight and Charlotte work on a way to free Audrey from the Sandman's stasis before he can trap her in his mind forever; at the same time, Duke tries to help Darkside Seeker Seth Byrne recover his memories of Haven.
Dwight and Charlotte work to clear Nathan's name when the citizens of Haven put the lawman on trial. Hoping to buy them time, the brothers Teagues moderate the courtroom proceedings, while Audrey continues her quest to solve the darkness troubles.
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.
As Mara'a endgame becomes clear, Nathan and Audrey pursue a plan to stop her once and for all.
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.
Duke’s roiling troubles and a new threat to Audrey force them each to seek the help of potentially dangerous allies.
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.
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.
Audrey must call in outside help as she is no longer immune to the troubles and Nathan may be lost forever.
A paranormal trouble tears Audrey and Nathan apart just after they were reunited.
Mara capitalizes on the latest crisis, forcing Duke and Nathan to roll the dice to get Audrey back in a dangerous gamble.
When Vince and Dave travel to North Carolina, their probing of Dave's past uncovers a body-swapping problem back in Haven.
Dwight and Nathan clash over what to do about Mara; Dwight wants her to end the troubles at any cost, but Nathan is convinced that Audrey is in there.
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.