Sam persuades the beautiful girlfriend of a brutal extortionist to stop acting as his punching bag and turn evidence against him.

A war hero, who saved Sam's life in Korea, thinks the smugglers he's aiding are trafficking uncut diamonds. What they're really smuggling is pure heroin and Sam must work to extricate his friend from the scheme.

A player in a poker game aboard a yacht bets his life and loses, and Jim and a policewoman pose as high rollers to enter the game and nail the killers.

Herbie, a lovestruck bellboy, interferes with Sam and Jim, who are pursuing the object of his affection, Sherry Martin, for her role in a brokerage firm robbery.