When Zoe Allertt was fourteen, her younger sister Ruby left to go trick or treating with her best friends, and then never came home. Although her hometown was quick to launch an intense and exhausting search, the girls were never found. Three years later, Zoe's community has slowly began to move forward without the girls, but Zoe can't quite shake the premonition that her sister was still out there, simply waiting to be found. The only other person to share her belief is Cristian Mathers, the older brother of one of the other missing girls - and as the town's resident bad boy, his word isn't taken seriously at all. With the rest of the town moving on, how can the two of them continue to look for their sisters? And what will they do if what they find at the end of their search isn't the happy ending they're yearning for at all?