When we last saw Audrey she was about to begin the process of restoring Duke Crocker's previous Trouble: His family curse. The Crockers have always been able to remove a Trouble from a Haven family's entire bloodline by killing a member of that family.

When three Haven residents fall down dead after hearing a baby cry in the distance, Audrey and Nathan know that William is up to his old tricks again. It's no surprise when William shows up to claim responsibility but what he's done is even more devious than they could have imagined.

Racked with guilt, Nathan sits by Audrey's bedside hoping for her recovery while William lies unconscious but under surveillance in another hospital room.

After revealing his true intentions to Audrey and leaving her unconscious in a field, William and his henchmen have been tearing Haven apart by amplifying more and more Troubles. The most recent victim is Doreen, whose Trouble was increased enough to cause a huge fire.

Right when Audrey is about to kill Nathan for the greater good of Haven, she looks up to see one of the devious henchmen that haunted her inside The Barn. She and Nathan give chase and run into Duke, Vince and Dave who are rushing in to make sure that Audrey hasn't already killed Nathan.

After Duke buries his brother the reality of his loss sets in and he decides to leave Haven for good. All he needs is for local deep-sea diver Jack Driscoll to return his pump and for Jennifer to get her things off the boat.

Drunk with the power that touching the blood of a Troubled person gives him, Wade Crocker has taken to stalking new prey: members of The Guard. He finds his latest victim, Sonia Winston, at a local bar and quickly stabs her to death.

When a Haven resident is found frozen in some kind of instant rigor mortis, Nathan gets the call. He tries to bring Lexie with him to help jog her memory but, since Duke just warned her to stay away from Nathan, she demurs by saying she has some paperwork to fill out at the police precinct.

Jordan wants Nathan to make good on his promise to die at Audrey's hand but Lexie has no idea what's going on and won't play ball. Tempers flare until Lexie is forced to pull a gun to protect Nathan from being killed.

In what's left of The Barn, William tries to get Lexie (a.k.a. Audrey) to trust him enough to complete the steps she needs to escape before it implodes completely, taking her with it.

Down in the sewers underneath Haven a simple repair job goes horribly wrong when a maintenance worker is attacked and killed.

Nathan isn't exactly welcome around town but he still has to do his job, which, at the moment, is tracking down the source of multiple spontaneous combustions all over town. If he and Dwight don't find the culprit soon, Haven Founder's Day promises to be very grim.

Season 4 picks up six months after the violent meteor storm that pummeled Haven. Unfortunately, the infamous Troubles didn't disappear with Audrey, who is living under a new identity when she is approached by a mysterious man in need of her assistance.