As the mysterious cracks spread throughout Haven at an increasing rate, a mysterious criminal returns to Haven and Audrey discovers the secrets of her past and her mother's.

Haven is beset by biblical plagues. Duke continues looking for information on the tattoo, with a little help from his past. Audrey and Nathan check out Audrey II, and try to figure out what to do about Chief Wuornos.

The residents of Haven have their worst fears come to life while Nathan's "trouble" seems to vanish.

The town's docks start attacking people while the other Audrey Parker probes Audrey's identity crisis.