Quincy is asked to cover for a GP working in a small community north of Los Angeles. There he becomes involved in a case of medical negligence after the death of a local man.

An evangelist whose church is being investigated by the government is found dead in a motel room., drugs and alcohol at his bedside table. Quincy is told to come up with the mode of death quickly, everyone wants to know how, and why, he died. The scientific results are borderline so Quincy asks Asten to authorize a psychological autopsy.

Quincy becomes concerned when a medical student accuses a veteran staff doctor of covering up the causes of a homicide while doing an autopsy.