Libby and James Hall can't believe their luck when the leaflet comes through the door. Swapping their tiny city flat for a beautiful house by the sea? Who would say no? But once they arrive at The Hideaway Libby starts to get jittery and increasingly paranoid. She is sure that someone is watching them. Something here isn't right. And when she suspects their lives to be in danger they swiftly decide to return to Bath.

But they can't pick up their old life so easily. Because this isn't just a casual house swap. This is something much, much more sinister.