Eccentric tycoon Jasper Whyte hosts a dinner at his mansion and announces that he will divide his money and give each guest a million dollars before the stroke of midnight. When his long-lost granddaughter suddenly arrives, Whyte changes his mind and proclaims that she will receive his entire fortune. A second lady appears at the estate, claiming that she is actually Whyte's granddaughter, Doris Waverly, and the first woman is found murdered in her room! With each guest possessing a motive, the mystery of the killer's identity briskly unfolds through a stirring series of surprises.

The title character, played by Edmund Lowe, is a famous magician who fakes his own death -- then reappears as his nonexistent twin brother. It's all part of Gregory's master scheme to pin his "murder" on innocent John Randall, the husband of Ellen, the woman Gregory loves.

The Lone Wolf tracks down Nazi spies in London during the German bombing.

Reformed jewel thief the Lone Wolf investigates the murder of a playboy who was blackmailing three socialites.

Complicated plot involving missing stamp collection and kidnapped businessman, with the Lone Wolf keeping one step ahead of the police in Havana trying to solve the crime and make a profit.

Michael Lanyard's faithful butler Jamison is mistaken for his boss by a gang of jewel robbers.

A reformed jewel thief fights to clear his name when he's framed for murder.

A hardworking secretary for a rich woman finds herself engaged to the woman's son and accused of a murder she didn't commit.

Delia Jordan's father is murdered and some very valuable jewelry stolen. She hires The Lone Wolf.

The Stooges are private detectives in the Old West trying to help a girl recover an IOU from a bad guy. Their attempts to steal the IOU from the villain's wallet and then from a safe meet with problems until Curly, who goes berserk whenever he sees a mouse, knocks out all the bad guys.

Stable hands Stan and Ollie are tending a thoroughbred named "Blue Boy." But when they overhear two men talking about a $5000 reward for the return of the stolen "Blue Boy," they miss the part about it being the painting, not the horse. They take the horse to the owner's house to claim the reward. The owner instructs them to put "Blue Boy" on the piano and Ollie explains, "these millionaires are peculiar."

The town's leading citizen becomes a homicidal maniac after his wife deserts him.