A lawyer who is planning to run for District Attorney accidentally kills a gangster who owns the nightclub where the attorney's girlfriend is a singer. Although he manages to cover up his involvement in the crime, his girlfriend discovers the body and is subsequently charged with the murder.

A university chemistry professor experiments with an ancient Mayan gas on a medical student, turning the would-be surgeon into a murdering ghoul as part of a plan to steal his lover.

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.

1941 film by Michael Curtiz

1943 film by Michael Gordon

1945 film by Phil Karlson