Joe O'Loughlin is in familiar territory standing on a bridge high above a flooded gorge, trying to stop a distraught woman from jumping. "You don't understand," she whispers, and lets go. Joe is haunted by his failure to save the woman, until her teenage daughter finds him and reveals that her mother would never have committed suicide not like that. She was terrified of heights.

What could have driven her to commit such a desperate act? Whose voice? What evil?

Having devoted his career to repairing damaged minds, Joe must now confront an adversary who tears them apart. With pitch-perfect dialogue, believable characters, and astonishingly unpredictable plot twists, Shatter is guaranteed to keep even the most avid thriller readers riveted long into the night.