Saving a dog from the pound gets a man mixed up in murder.

A New York City newspaper is sued for libel after reporting the wrong verdict in a murder trial.

Fake fortunetellers win the confidence of clients and then get them to part with their money by buying mining stocks which are worthless.

A faded star is suspected of killing a studio executive.

Carmelita Fuentes is a fiery-Latin singer/dancer in Mexico City who has designs on Dennis Lindsay, an American publicity agent, for unclear reasons, while Lindsay's shiftless uncle Matthew Lindsay aids and abets her every step of the way to the marriage altar.

Michael Lanyard is suspected of stealing two fabulous diamonds from a vault in Scotland Yard, where they were being held for safekeeping, but the Yard can't prove he did it. Later, Lanyard is summoned by a member of the nobility to help the latter raise money to pay a blackmailer. Lanyard later finds evidence to reveal the diamonds as having been stolen by a famous stage star.

Two actors who play detectives on the radio find themselves investigating a real crime masterminded by an arch-criminal named the Cobra.