It was only an accident but it would change their lives forever.

Last summer, four terrified friends made a desperate pact to conceal a devastating secret.
This summer, four friends are going to learn that some secrets just won't stay buried.

But now, someone has learned the truth, and the horror is starting again. There is an unknown killer out there who is stalking them in a deadly game. Will he stop at terror - or is he out for revenge?

With twists and turns at every corner, they'll have to fight to stay steps ahead of a menace determined to make them pay.

'Lois Duncan is the patron saint of all things awesome' Jenny Han, bestselling author of To All the Boys I've Loved Before

'Lois Duncan has always been one of my biggest inspirations . . . She's a master of suspense, so prepare to be dazzled and spooked!' Sara Shepard, bestselling author of Pretty Little Liars