Nick Cutter, author of #HorrorBookTok sensation The Troop, returns with a heart-pounding novel of terror about a young woman searching for her missing friend and uncovering a shocking truth. On a sunny morning in June, Margaret Carpenter wakes up to find a new iPhone on her doorstep. She switches it on to find a text from her best friend, Charity Atwater. The problem is, Charity's been missing for over a month. Most people in town - even the police - think she's dead. Margaret and Charity have been lifelong friends. They share everything, know the most intimate details about one another . ....