Atomic scientist/pilot Doug Martin is missing after his plane crashes on an reconnaissance mission after a nuclear test. Miraculously appearing unhurt at the base later, he is given sodium amethol, but authorities are skeptical of his story that he was captured by aliens determined to conquer the Earth with giant monsters and insects. Martin vows to use existing technology to destroy them.

Accountant Augustis King discovers that his wife, Marfhe, is having an affair with his boss Sam Bellows. He telephones Internal Revenue Bureau that he can give evidence of a large tax-evasion racket. Before IRS-agent Steve Daniels arrives, King is murdered by a henchman of Bellows and his partner, Ernie Medford. Daniels discovers that Bellows and Medford are smuggling gold bullion from their mine in Mexico, and sell and bank the money under assumed names. they hide the bullion in a compartment welded to the bottom of a car.

A medical student learns about a scheme to drug a girl and pass her off as an heiress to an oil fortune.

A kindly, enthusiastic, newly-arrived American immigrant from Hungary is forced to turn to a life of crime after his face is badly disfigured in a hotel fire.

A reporter sleuths the mystery behind an oft-married Viennese doctor whose wives met mysterious fates.

An amateur boxer's girlfriend inspires him to face a ring pro entered by a gangster.

Police catch a break when suspected kidnappers are spotted on a train heading towards Union Station. Police, train station security and a witness try to piece together the crime and get back the blind daughter of a rich business man.

The life of a young kid, who starts stealing small things to fit in with the "cool crowd".

A safecracker breaks his leg and reforms with a good girl and a priest.

A locksmith is pressured into crime when the mob makes him perform an elaborate bank robbery.