A countess from Transylvania seeks a psychiatrist’s help to cure her vampiric cravings.

Dr. Janos Rukh discovers a certain type of radium that has almost magical healing properties. But the element has a dangerous side, too, and it has already started affecting Rukh. Consumed by paranoia, he begins to suspect that his wife is having an affair. Wild for revenge, Rukh hatches a deadly plot...using his own poisoned body as a...

A gang of blackmailers sends a cripple to San Francisco to expose a banker they have been blackmailing. However, the cripple meets and falls in love with the banker's daughter.

Outlaw Black Deering leads a band of desperadoes, but decides to give up the bandit life. Agreeing to go on one last job with his gang, he is captured when his henchman Jordan betrays the gang for the reward. Deering escapes and determines to avenge himself on Jordan.

An able nurse clashes with a new doctor at her hospital.