Frank Bigelow is about to die, and he knows it. The accountant has been poisoned and has only 24 hours before the lethal concoction kills him. Determined to find out who his murderer is, Frank, with the help of his assistant and girlfriend, Paula, begins to trace back over his last steps. As he frantically tries to unravel the mystery behind his own impending demise, his sleuthing leads him to a group of crooked businessmen and another murder.

A young doctor taking a break from work is shot in the head, and the police can't find a clue even as to a possible motive. Inspector Al Gordon (John Alexander) decides that he has to put some men on duty at the hospital, and one of them is Fred Rowan (Richard Conte), a detective with experience as an army medic, masquerading as an intern. What Rowan finds is a high-pressure world in which interns are hopelessly squeezed for time, sleep, energy, and -- most of all -- money, and walk a fine line on the edge of personal and professional disaster.