When a gruesome triple homicide rocks the Midwest summer, 14-year-old Marie is found at the scene, covered in blood and with an alibi that defies explanation. Will her incredible claim be believable, or is it just another sinister twist?

A #1 New York Times bestseller by the author of We Were Liars. On a private island, the Sinclairs are struggling to cope with the tragic loss of their youngest sister - until two new arrivals shake everything up in this shocking and twisty tale.