Haven's fifth season centers on Audrey Parker, a police officer who discovers she's connected to a series of supernatural afflictions plaguing her town. Her primary goal is to understand and control these "Troubles," while also seeking to reunite with her love, Nathan Wuornos, a fellow officer. The season begins with Audrey's personality fractured, with the malevolent Mara taking control and causing chaos, including the destruction of the lighthouse.

The core conflict escalates as Audrey and Mara become separate entities, leading to new dangers. Jennifer's body washes ashore, and later, Audrey briefly surfaces before Mara regains control. A major turning point occurs when Audrey and Mara swap bodies with others, and then a separate Audrey emerges, leaving her vulnerable. Nathan is seemingly killed and sent to an alternate dimension. The season culminates in a battle against Audrey's father, Croatoan, who seeks to unleash all Troubles upon Haven. Duke sacrifices himself, and Audrey makes the ultimate choice to re-enter the Barn, ending the Troubles and saving the town.

Season 5 of Haven covers episodes 1-26. Here's everything that happened:

Season 5, Episode 1: See No Evil - The aftermath of William's defeat leaves Duke critically injured, and Mara firmly in control of Audrey's body. A new trouble emerges, supernaturally silencing citizens across Haven. The lighthouse collapses into the sea, and Duke's bleeding eyes stop, indicating a potential shift. Audrey, now Mara, handcuffs Nathan and steals his weapon, revealing her intent to find Jennifer.

Season 5, Episode 2: Speak No Evil - Duke grapples with Jennifer's death, while Nathan searches for Audrey within Mara's cruel persona. Dwight takes on the immense responsibility of maintaining order in Haven. The episode concludes with Jennifer's body washing ashore, and Nathan, despite capturing Mara, is torn by the possibility of Audrey still being inside her.

Season 5, Episode 3: Spotlight - Nathan attempts to awaken Audrey from Mara's control by using her memories, but Mara's dark personality resurfaces. Meanwhile, Duke encounters Jody, a woman whose Trouble causes her to emit destructive light beams, leading to Jody's sister being killed and her niece Charlotte being burned. Nathan's efforts to save Audrey are complicated when Duke, overloaded with Troubles, needs Mara's help, forcing Nathan to choose between saving Duke and continuing his mission. The episode concludes with Nathan seemingly having Audrey briefly surface, only for Mara to regain control.

Season 5, Episode 4: Much Ado About Mara - Dwight and Nathan clash over how to handle Mara, with Dwight wanting her to end the Troubles and Nathan focused on saving Audrey. Mara "cures" Jody's Trouble by turning it into deadly microwaves, causing birds to fall from the sky and cell service to fail. Duke is afflicted with a "gibberish" Trouble, which Nathan helps him overcome by addressing his guilt over Jennifer's death. Ultimately, the group's attempts to reach Audrey through Mara result in Mara realizing Audrey is still inside her and resolving to kill her.

Season 5, Episode 5: The Old Switcheroo (1) - Vince and Dave investigate Dave's past in North Carolina, only to swap bodies due to a supernatural affliction. Back in Haven, Dwight and Gloria also switch bodies while investigating a suspicious death at a mental institute. Audrey briefly surfaces, warning that secrets cause the body-swapping. The episode concludes with Nathan and Duke attempting to handle Mara, who is impersonating Audrey.

Season 5, Episode 6: The Old Switcheroo (2) - The body-switching trouble escalates, affecting Nathan, Duke, Dwight, Gloria, Dave, and Vince. In North Carolina, Dave and Vince uncover the truth about the Doohan brothers, Skip and Jeffrey, who originally switched bodies due to Jeffrey's love for Skip's wife, Allison. When the brothers are reunited, all the body-switches are reversed. Duke then releases a reincarnation Trouble, which brings forth a second Audrey, separate from Mara.

Season 5, Episode 7: Nowhere Man - A new Trouble causes people to vanish, leaving only shadows. Audrey, now separated from Mara, loses her immunity to the Troubles. Nathan is seemingly killed by the Trouble and sent to an alternate dimension as a ghost. Audrey grapples with her new identity and lack of immunity, while Mara remains uncooperative.

Season 5, Episode 8: Exposure - Audrey enlists Seth to help communicate with Nathan, who is trapped in a "ghostly plane." They discover that Morgan, Amy's fiancé, is the cause of the trouble, driven by his own impending death. Morgan is revealed to be the killer, and Amy must accept his death to end the trouble, allowing Nathan and Audrey to return.

Season 5, Episode 9: Morbidity - A mysterious illness sweeps through Haven, infecting Audrey and many other Troubled citizens, causing their supernatural afflictions to activate. Dr. Charlotte Cross, a CDC scientist, arrives to investigate Dave's infection but becomes suspicious of the town's secrets. The episode culminates with the Troubled individuals' afflictions dangerously escalating, and Audrey realizing she may have lost her "mojo" to handle them.

Season 5, Episode 10: Mortality - A contagion sweeps through Haven, activating Troubles and causing chaos. Dr. Charlotte Cross arrives, but her true motives are unclear. Ultimately, Pete is revealed as the source of the contagion. Mara stabs Pete, forcing Duke to kill him and absorb his Trouble, while Audrey's own health deteriorates, hinting at a deeper connection to the spreading illness.

Season 5, Episode 11: Reflections - Audrey's health deteriorates as a new Trouble emerges, causing victims to be sliced apart. Duke struggles with his volatile Troubles, and Mara kisses Duke, seemingly stabilizing him while also revealing her own developing feelings. Audrey grapples with her identity and the possibility of not being real.

Season 5, Episode 12: Chemistry - Charlotte reveals she is Mara's mother, and by extension, Audrey's. Duke, struggling with a dangerous Trouble, accidentally kills Kirk and absorbs his Trouble, while Charlotte makes progress on a cure. The episode concludes with divided loyalties and a terrifying revelation that changes everything.

Season 5, Episode 13: Chosen - Audrey and Charlotte attempt to merge Audrey and Mara to save Haven, but Mara resists, threatening to unleash the Troubles through Duke. Charlotte reveals she is Audrey/Mara's ancient mother from another world. As Duke's Troubles erupt, Mara is seemingly killed by Charlotte, and the Troubles are unleashed upon Haven, leaving its fate uncertain.

Season 5, Episode 14: New World Order - Duke unleashes all the Troubles upon Haven, which are then spread to everyone by a mysterious fog. Nathan and Dwight reveal they are Troubled to their officers, advocating for kindness. Charlotte attempts to get Audrey to leave Haven, but Audrey refuses. The episode concludes with Duke leaving Haven, and the discovery that the cause of Joe's death mirrors that of the Colorado Kid.

Season 5, Episode 15: Power - A darkness-based Trouble causes people to die in the dark, coinciding with widespread power outages. Nathan leads a team to the power plant to restore electricity, while Audrey and Dwight deal with the escalating panic and cover up a murder. Kira Fletcher is revealed to be alive but trapped, and the episode concludes with the power restored, but the darkness Trouble still a threat.

Season 5, Episode 16: The Trial of Nathan Wuornos - Facing accusations for Kira's supposed death, Nathan is put on trial by the citizens of Haven. To buy time for Dwight and Charlotte to rescue Kira, who is actually trapped underground, Audrey orchestrates the trial. Meanwhile, Audrey investigates the encroaching darkness, discovering that Tony, Kira's fiancé, is the one with the darkness Trouble. The episode concludes with Kira being rescued and Tony seemingly accepting his darkness, averting immediate disaster.

Season 5, Episode 17: Enter Sandman - Audrey is trapped in the Sandman's dream world, where he intends to marry her. Charlotte attempts to rescue Audrey, but her memory is wiped, turning her into Audrey's maid of honor. Grayson is killed when the Sandman's control falters. Ultimately, Audrey breaks free by recalling her love for Nathan and her true identity, causing the Sandman's world to collapse. The Sandman is left alone in his dissolving dream world, while Audrey and Charlotte awaken.

Season 5, Episode 18: Wild Card - As Audrey and Charlotte work to condense aether into a new Barn to cure the Troubles, they are targeted by Croatoan. Dave's visions reveal Croatoan is the "No Marks Killer," and he is using Tarot cards to curse Audrey, Nathan, and Dwight. Charlotte is fatally wounded by Croatoan, but not before revealing he is Audrey's father. The episode concludes with Audrey determined to complete the new Barn to stop him.

Season 5, Episode 19: Perditus - A Trouble that resurrects the dead leads Nathan and Dwight to bring Charlotte back, only for the resurrected to turn into zombies. Charlotte sacrifices herself again to prevent turning into a zombie, revealing crucial information about Croatoan before her final death. Duke experiences a terrifying vision of a destroyed Haven, realizing he must return.

Season 5, Episode 20: Just Passing Through - Nathan and Vince travel to 1983 to discover how Croatoan first entered Haven. They witness Lucy killing James Cogan (the Colorado Kid), an act orchestrated by Croatoan possessing Dave. Duke is apprehended by mysterious men who deliver a letter from Nathan's past, tasking him with finding a Colton descendant to open a portal.

Season 5, Episode 21: Close to Home - Nathan enters the Void and confronts William, while Audrey and Duke face a revenge-seeking individual. Vince and Dwight work to free Dave from Croatoan's influence. Nathan becomes trapped in the Void with William, and Hailie's attempt to create a portal back fails, leaving his fate uncertain.

Season 5, Episode 22: A Matter of Time - Dave confronts Croatoan within his own mind, leading to Dave's death as Croatoan escapes his vessel. Meanwhile, William offers Nathan aether to escape the Void, and Duke is forced to absorb Hailie's Trouble to reopen the thinny. The episode concludes with Croatoan leaving Dave's body, warning that he is coming for Audrey.

Season 5, Episode 23: Blind Spot - As Croatoan targets Audrey, the Haven Police Station becomes a battleground against an old Trouble that animates the building itself. Duke Crocker, under Croatoan's control, destroys the aether core, and Agent Howard reveals Audrey is an "overlay personality" needing authorization to become whole. The episode concludes with Croatoan revealing himself to Audrey, identifying himself as her father.

Season 5, Episode 24: The Widening Gyre - Nathan and Dwight attempt to rescue Audrey from Croatoan, but Duke's escalating "trouble" complicates their efforts. Croatoan reveals he is Audrey's father and that he infused her with aether to save her life, explaining her unique abilities. Vince decides to become the new Barn controller, a sacrifice that will cost him his life. The episode concludes with Croatoan intending to flood Haven with aether, setting the stage for the series finale.

Season 5, Episode 25: Now - As the heroes race to rebuild the Barn and end the Troubles, hope dwindles. Croatoan manipulates Dwight by resurrecting his daughter, Lizzie, forcing Dwight to betray the group by giving up the Barn's controller crystal. Meanwhile, Duke, consumed by his role as Croatoan's pawn, destroys the aether core, jeopardizing their plan. In a heart-wrenching moment, Duke sacrifices himself by having Nathan kill him, fulfilling a prophecy and preventing Croatoan from obtaining the Troubles within him. The episode concludes with Audrey seemingly accepting her fate to save the world, leaving Nathan devastated.

Season 5, Episode 26: Forever - In the series finale, Audrey makes the ultimate sacrifice, choosing to re-enter the Barn to save Haven from Croatoan and end the Troubles permanently. Nathan is able to return to Haven, and Duke dies a hero, sacrificing himself to prevent Croatoan from gaining the Troubles. The episode concludes with Audrey's departure, ensuring the town's safety.