When a bomb detonates outside a Harvard law school building, killing several including a law student who was counseling Jackie Kelvinski, a woman trying to get out of an abusive marriage, Jackie is afraid that the bomb was set off by her unstable husband. Annie Squires, an investigator helping her out, tries to convince her that's unlikely, but Jackie's not listening. And before the Cambridge police get very far in their investigation to determine who could have committed such a crime, a second deadly bomb explodes, this time at a Cambridge courthouse.

The bomb narrowly misses forensic neuropsychologist Dr. Peter Zak, late for a meeting inside. Peter, suddenly closer to the action that he'd like to be, agrees to help the police by profiling the bomber from some anti-government fliers found at the crime scene. But were they really written by the perpetrator? Or is the bomber's motive more personal, perhaps directed at Jackie, or Peter, or another target? Delving deeper into the mind of the criminal, Peter must work quickly before more lives are lost, including possibly his own.

Guilt, G. H. Ephron's latest thrilling psychological suspense novel, is a fascinating and surprising novel about motive and murder, survivor's guilt and criminal culpabilty--and trying to stay one step ahead of a killer.