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.

Based partially on the story of Bonnie and Clyde, Eddie Taylor is an ex-convict who cannot get a break after being released from prison. When he is framed for murder, Taylor is forced to flee with his wife Joan Graham and baby. While escaping prison after being sentenced to death, Taylor becomes a real murderer, condemning himself and Joan to a life of crime and death on the road.

Former war-time Army buddies now students in college decide to rip off a Reno casino.

An escaped convict, injured during a robbery, falls in love with the woman who nurses him back to health, but their relationship seems doomed from the beginning.

A dark personal secret drives a young woman to use every man she encounters.

An unemployed drifter, Eric Stanton wanders into a small California town and begins hanging around the local diner. While Eric falls for the lovely waitress Stella, he also begins romancing a quiet and well-to-do woman named June Mills. Since Stella isn't interested in Eric unless he has money, the lovelorn guy comes up with a scheme to win her over, and it involves June. Before long, murder works its way into this passionate love triangle.

Slick lawyer Thomas Farrell has made a career of defending mobsters in trials. It's not until he meets a lovely showgirl at a mob party that he realizes that there's more to life than winning trials. Farrell tries to quit the racket, but mob boss Rico Angelo threatens to hurt the showgirl if Farrell leaves him.

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

Delinquent Danny Fisher flunks out of high school, quits his job as a nightclub busboy, and one night gets the chance to perform. Success is imminent and local crime boss Maxie Fields wants to hire him to perform at The Blue Shade. Danny declines, but Fields won't take no for an answer.

A night club owner becomes infatuated with a torch singer and frames his best friend/manager for embezzlement when the chanteuse falls in love with him.

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.

A calculating divorcée risks her chances at wealth and security with a man she doesn't love by getting involved with a hotheaded murderer.

An upper-crust family dinner is interrupted by a police inspector who brings news that a girl known to everyone present has died in suspicious circumstances. It seems that any or all of them could have had a hand in her death. But who is the mysterious Inspector and what can he want of them?

After being framed for a policeman's murder, a criminal escapes prison and sets out for revenge.

A married woman and a drifter fall in love, then plot to murder her husband.

On trial for murdering his girlfriend, philandering stockbroker Larry Ballentine takes the stand to claim his innocence and describe the actual, but improbable sounding, sequence of events that led to her death.

Cleve Marshall, an assistant district attorney, falls for Thelma Jordon, a mysterious woman with a troubled past. When Thelma becomes a suspect in her aunt's murder, Cleve tries to clear her name.

Expecting the usual loss, a boxing manager takes bribes from a betting gangster without telling his fighter.

Questioned as a murder suspect, solid (but drunk) citizen Al Willis attacks his police questioners, is beaten, and swears vengeance against them. Next night, Lieut. Parks is murdered; Willis is the only suspect in the eyes of tough Chief Conroy, who pursues him doggedly despite lack of evidence. The obsessed Conroy is dismissed from the force, but continues to harass Willis, who flees to a sleazy town on the Mexican border. Of course, Conroy follows. But which is crazy, Conroy or Willis?

A fisherman with money problems hires out his boat to transport criminals.