The discovery of a 13-year-old boy killed in an explosion shocks police and their grief turns to alarm when they discover a second, unexploded bomb; to catch the killer, Detective Joe Kenda must first figure out the bomb's intended target.

When Julie Smith reports being sexually assaulted, Lt. Joe Kenda and his Sex Crimes Unit discover a terrifying similarity to other attacks on the east side of town. It's a race against the clock to catch a serial rapist before he strikes again.