Wayne Mallory

Priceless black pearls, a masterly train robbery and a murderous cellmate are all part of Bat's latest adventure when he is jailed on suspicion of cheating at cards.

A movie company is shooting the famous scene from 'The Count of Monte Cristo'. The producer hires Mike Nelson to assist the movie star and his stand-in in the perilous underwater sequence.

The town scavenger stumbles across counterfeit money lost by outlaws.

Reckless Gracie Bond enrolls in Mike's class for skin-diving instructors. She promptly flunks out. Vengeance bent, she invites Mike on a dive to an underwater cave. Gracie lets half the air out of Mike's tank, then waits for the chance to save his life.

A member of a holdup trio is wounded during a robbery of a beach casino. To get a doctor to their oceanside hideout, his accomplices kidnap the pretty skin-diving wife of a doctor to draw her husband into a trap. Mike Nelson hits on a daring rescue plan.