Carmine Coltello
A tough detective who is part of an elite New York City unit is trying to find out who killed his partner, but uncovers a plot to kidnap mobsters for money.
Dr. Lagerman (uncredited)
Dr. Bock, the chief of medicine at a Manhattan hospital, is suicidal after the collapse of his personal life. When an intern is found dead in a hospital bed, it appears to Bock to be a case of unforgivable malpractice. Hours later, another doctor, who happens to be responsible for another case of malpractice, is found dead. Despondent, Bock finds himself drawn to Barbara, the daughter of a comatose missionary.
Store Owner
A junkman who lives along New York's East River saves a woman from an attacker, then lets her stay with him.
Louis
Chronicles the rise and fall of the organised crime syndicate known as Murder, Incorporated, focusing on powerful boss Lepke and violent hit man Reles.
Sergeant Novak
Ex-police/army dog King inherits a fortune from an eccentric millionaire. But someone poisons him for his fortune. He gets to go back to earth as a human detective to bring his killer to justice and protect the girl who used to look after him.