El detective Mike Hammer recoge en la carretera, en plena noche, a una muchacha que huye de un peligro mortal. Poco después son interceptados por los acosadores, unos despiadados matones que, tras torturar y matar a la muchacha y pegar una paliza al duro detective, les arrojan por un precipicio. Hammer logra salir indemne, y se dedicará a investigar este misterioso caso.
Marty is a shipping clerk in the garment district and a wise guy trying to cut corners and get by on angles, and not very good at it. He meets Helen and decides to change his ways, but lack of patience in slow-progress jobs leads him to become involved with a neighborhood gang.
