Natural causes or foul play? That's the question Clay Edison must answer each time he examines a body. Figuring out motives and chasing down suspects aren't part of his beat -- not until a seemingly open-and-shut case proves to be more than meets his highly trained eye. Eccentric, reclusive Walter Rennert lies cold at the bottom of his stairs. At first glance the scene looks straightforward: a once-respected psychology professor, done in by booze...