As a young child, Noah experienced creepy visions of a large man hiding behind his bedroom curtains. Growing up, the spirit was protective, often shushing him to sleep, but now things are taking a sinister turn. Since moving in with his long-time girlfriend, Ellie, the mysterious figure has begun tormenting her, and they want to understand why. Barri works to get to the truth, meanwhile Jayne discovers prison hulks used in the 1800s, a stone’s throw away, that could be the answer to the mysterious man’s identity.