Welcome to Wisewood. Where we keep your secrets, if you keep ours.Kit Collins knows she needs to change.So when she hears about Wisewood, a six month self-improvement program on a remote, private island, Kit signs up. She is to have no contact with the outside world.But then an email reaches her sister, Natalie:We know what you did. Would you like to come tell your sister – or should we?As Natalie embarks on a journey to find Kit, it becomes clear that they are both in danger. And as each sister tries to guard her own secrets, the chances of them ever returning home diminish…