When her best friend Eden doesn't turn up for school one morning, Jess's world is turned upside down. The police say Eden's missing, and her boyfriend Liam is the prime suspect. So Jess starts retracing her steps. She looks back over the summer they spent together. She starts to notice new things. She questions everything she thought Eden's summer had been about. And as the truth is revealed, she realises she needs to find Eden before the unthinkable happens . . . A thrilling journey through friendship, loss, betrayal and self-discovery.