It's Dr. Kay Scarpetta's birthday and she's about to head to Miami for a vacation with her FBI profiler husband Benton Wesley when she notices seven pennies on a wall behind their Cambridge house. Is this a kids' game? If so, why are all of the coins dated 1981 and so shiny it's as if they're newly minted? Her cellphone rings, and Detective Pete Marino tells her there's been a homicide five minutes away. A high school music teacher has been shot with shocking precision as he unloaded groceries from his car. No one heard or saw a thing. It's as if God did it.