Evil mastermind Dr. Mabuse is using brainwashed prison inmates to commit crimes but the German police aided by an FBI agent is on his trail.Evil mastermind Dr. Mabuse is using brainwashed prison inmates to commit crimes but the German police aided by an FBI agent is on his trail.Evil mastermind Dr. Mabuse is using brainwashed prison inmates to commit crimes but the German police aided by an FBI agent is on his trail.