In Harrisburg, Pa., 86-year-old Goldie Snyder is found brutally murdered in her bait shop; her wounds make Dauphine County Coroner Graham Hetrick suspect the killer has done this before and will kill again.

Coroner Graham Hetrick is immediately called to the scene after the decomposed body of Marcus Garner is found abandoned in a Harrisburg, Pa., garage; Graham must use a special science and the common housefly to solve the case.

When the body of Dale Bloom is discovered mutilated in his home in Harrisburg, PA, it's up to Dauphin County Coroner Graham Hetrick to read the numerous wounds and determine not only why Dale was targeted, but uncover the identity of a disturbed killer.