Tally Whyte has seen a lot of dead bodies in her years with the Massachusetts Grief Assistance Program, but this is the first time a murder victim has been brought there by the murderer himself. During the night, someone broke into the Office of the Chief Medical Examiner, aka the Grief Shop, and left behind a tragic calling card--the body of a young girl, bearing a message that reads: Sins of the Fathers.

The girl's playmate is also missing. Could she be another victim? Or can Tally still save her before the killer strikes again? As the mysteries multiply and Tally's life is threatened, she scrambles to prevent yet another child from falling prey to a madman's warped sense of justice.