A former boxer turned taxi driver earns the scorn of his nagging wife and gets mixed up with jewel thieves.

When an employee at an illegal gambling den dies suspiciously, her sister, Nancy, looks into the situation and falls for Johnny O'Clock, a suave partner in the underground casino. Selfish and non-committal by nature, Johnny slowly begins to return Nancy's affection and decides to run away with her, but conflict within his business threatens their plans. As Johnny tries to distance himself from the casino, his shady past comes back to haunt him.

Charley Davis, against the wishes of his mother, becomes a boxer. As he becomes more successful the fighter becomes surrounded by shady characters, including an unethical promoter named Roberts, who tempt the man with a number of vices. Charley finds himself faced with increasingly difficult choices.

Fed up with her small-town marriage, a woman goes after the big time and gets mixed up with the mob.

Truck driver Mike Lambert is a down-and-out mining engineer searching for a job. When his rig breaks down in a small town, he happens upon a venomous seductress. When her boyfriend robs a bank, they intend to frame Lambert.

An ex-con trying to go clean ends up working for a crooked trucking company swindling money.

Lawyer Joe Morse wants to consolidate all the small-time numbers racket operators into one big powerful operation. But his elder brother Leo is one of these small-time operators who wants to stay that way, preferring not to deal with the gangsters who dominate the big-time.

An unscrupulous boxer fights his way to the top, but eventually alienates all of the people who helped him on the way up.

An innocent man turns fugitive as he reconstructs events that implicate him for a murder and robbery he did not commit.

A charming racketeer seduces the DA's stepdaughter for revenge, then falls in love.

Police Lt. Leonard Diamond vies to bring a clever, well connected, and sadistic gangster to justice all the while obsessing over the gangster's girlfriend.

An insurance man wishing for a more exciting life becomes wrapped up in the affairs of an imprisoned embezzler, his model girlfriend, and a violent private investigator.

Pursued by the big-time gambler he robbed, John Muller assumes a new identity—with unfortunate results.

Career gambler Dan Milner agrees to a $50,000 deal to leave the USA for Mexico, only to find himself entangled with fellow guests at a luxurious resort and suspecting that the man who hired him may be the deported crime boss Nick Ferraro aiming to re-enter to the USA.

Gamblers who "took" an out-of-town sucker in a crooked poker game feel shadowy vengeance closing in on them.

A spectacular heist starts to unravel as the crooks take it on the lam.

After two gang-related killings in "Center City," a suspect (who was framed) is arrested, released on bail...and murdered. Inspector Briggs of the FBI recruits a young agent, Gene Cordell, to go undercover in the shadowy Skid Row area (alias George Manly) as a potential victim of the same racket. Soon, Gene meets Alec Stiles, neurotic mastermind who's "building an organization along scientific lines." Stiles recruits Cordell, whose job becomes a lot more dangerous.

A gambling queen uses blackmail to stop a British financier from closing her Chinese clip joint.

Movie star Charlie Castle draws the ire of Hollywood producer Stanley Hoff when he refuses to sign a new seven-year contract. Castle is sick of the low quality of the studio's films and wants to start a new life. While his estranged wife supports him in the decision, Castle's talent agent urges him to reconsider. When Castle continues to be uncooperative, Hoff resorts to blackmail in order to get his way.

A conman poses as a war relief fundraiser, but when he falls for a charity worker, his conscience begins to trouble him.