Reporter Homer Smith accidently draws Marcia Warren into his mission to stop Nazis from bombing Allied Conwoys with robot-planes.

A policeman's family helps to exonerate him of murder charges in the death of a man he had under interrogation.

Larry Haines, a mediocre vaudeville entertainer, boards a train for Los Angeles. Aboard, he meets an attractive, blonde British agent carrying a coded message hidden in a brooch—and is being pursued by Nazi agents.

In Casablanca, Morocco in December 1941, a cynical American expatriate meets a former lover, with unforeseen complications.