In 2011, Zoe Nolan walked out of her dormitory in Manchester and was never seen or heard from again. Her case went cold. Her story was sad, certainly, but hardly sensational, crime writer Joseph Knox thought. He wouldn't have given her any more thought were it not for his friend, Evelyn Mitchell. Another writer struggling to come up with a new idea, Evelyn was wondering just what happens to all the girls who go missing. What happens to the Zoe Nolans of the world? Evelyn began investigating herself, interviewing Zoe's family and friends, and emailing Joseph with chapters of the book she was writing with her findings. Uneasy with the corkscrew twists and turns, Joseph Knox embedded himself in the case, ultimately discovering a truth more tragic and shocking than he could have possibly imagined.