Raoul Leduc is a police inspector trailing a spy who plots to kidnap an important American atomic scientist. Joe Victor a gangster who is hired to carry out the abduction, balks when he learns what is at stake and helps Leduc out instead.

Eddie Darrow, seeking a mobster's widow in Macao, gets involved in a casino owner's affairs.

Masaki, a baseball player and gas-station attendant, gets into trouble with the local Yakuza and goes to Okinawa to get a gun to defend himself. There he meets Uehara, a tough gangster, who is in serious debt to the yakuza and planning revenge.

A meek undertaker becomes trapped in a violent world when a gangster enlists him to dispose of a growing number of corpses.

G-Man Jeff Crane poses as a crook to infiltrate the notorious Purple Gang, a band of hoodlums which preys upon other hoodlums. Orchestrating the jailbreak of the gang's leader, Crane joins him in a Dillinger-like flight across the country.

During World War II, an American serviceman in London decides to impress his English girlfriend by acting as an American gangster, which soon turns deadly.

Gentleman gangster Max and his partner, Riton, pull off their last, most successful heist and find themselves comfortable enough to retire in the style they enjoy. However, Max confides the details of the theft to his younger mistress, Josey -- who has secretly taken up with ambitious young rival gangster Angelo. Angelo then has Riton kidnapped and demands the stash of gold as ransom, which threatens Max's dreams of the perfect retirement.

A small-time hood shoots his way to the top, but how long can he stay there?

The inventor of a new top-of-the-line burglar alarm system is kidnapped by a gang in order to get him to help them commit robberies.

Prohibition is ending so bootlegger Bugs Ahearn decides to crack California society. He leases a house from down-on-her-luck Ruth and hires her as social secretary. He rescues Polly Cass from a horsefall and goes home to meet her dad who sells him some phony stock certificates. When he learns about this he sends to Chicago for mob help.

After a shoot-out kills five FBI agents in Kansas City the Bureau target John Dillinger as one of the men to hunt down. Waiting for him to break Federal law they sort out several other mobsters, while Dillinger's bank robbing exploits make him something of a folk hero. Escaping from jail he finds Pretty Boy Floyd and Baby Face Nelson have joined the gang and pretty soon he is Public Enemy Number One. Now the G-men really are after him.

In 1920s Chicago, Italian immigrant and notorious thug, Antonio 'Tony' Camonte, aka Scarface, shoots his way to the top of the mobs while trying to protect his sister from the criminal life.