In this dark thriller from bestselling author Harlan Coben, two parents encounter suspicions that their son may have been involved in a friend's death.

Just how far parents will go to protect their kids? When their son Adam is implicated in the death of his classmate, Tia and Mike Baye install a sophisticated spy program on Adam's computer, and within days are jolted by a message from an unknown correspondent.

Worrying about their sixteen-year-old son Adam in the wake of a friend's suicide and a string of other traumatic school incidents, Tia and Mike Baye install an activity monitor on their son's computer and are alarmed to learn that the suicide victim's mother believes Adam may have been involved.

Worrying about their sixteen-year-old son Adam in the wake of a friend's suicide and a string of other traumatic school incidents, Tia and Mike Baye install an activity monitor on their son's computer and are alarmed to learn that the suicide victim's mother believes Adam may have been involved.