We move ahead six months on the Haven Season 4 premiere.
Duke comes back to the world through an aquarium tank in Boston, after being thought dead for the last six months.
Strange weather phenomena hits Haven.
We meet Jennifer Mason, and Duke talks her into helping him get back to Haven.
Duke tracks down Nathan, who is fighting for money.
Audrey, aka Lexie, is working in a bar at an unknown location.
Duke, Nathan and Jennifer have a hell of a welcome in Haven.
Dwight is the new Police Chief.
Jennifer heard in her head Agent Howard tell Audrey that killing the person she loved the most would stop the troubles forever, and Nathan wants to sacrifice himself for that purpose.
A man named William meets Lexie and helps her out of a bind with a man with a gun.
Jordan is not very happy with Vince.
Nathan remembers Audrey's first case and determines that it's that same case and the woman involved who is causing the weather anomalies in Haven.
Duke's brother, Nate, owns the Grey Gull.
William tells Lexie that he's there to tell her a secret, that she's not who she thinks she is and if she doesn't discover who she is a lot of people are going to die.