From the New York Times-bestselling author comes a pulse-pounding domestic thriller about a group of friends who have been bound for twenty years by a single secret.

Twenty years ago four teenagers spent a blissful summer as the closest of friends. But when a new boy looked to join them, they convinced him to play a dangerous initiation game with deadly stakes. What happened next would change each of them forever.

Now, after leading separate lives, three of the four friends reunite for the first time since that summer and unbearable memories come flooding back. Someone knows what happened - but who? And just how far will they go to keep their shocking secrets buried?