Nathan has a steady job as an outdoor pursuits instructor but that's not his first career. Ten years earlier he'd been a teacher when it all went dreadfully wrong during an orienteering event for his secondary school students. Four young people disappeared suddenly but only one was found. Malnourished and in shock, Olivia was never able to tell anyone what happened. A decade later a body is found, Nathan starts having hallucinations and Olivia crosses his path again. Whatever began that day isn't finished. ''Evil will find a way through.''