In the Olden Tymes, Count Regula is drawn and quartered for killing twelve virgins in his dungeon torture chamber. Thirty-five years later, he comes back to seek revenge on the daughter of his intended thirteenth victim and the son of his prosecutor in order to attain immortal life.
Vienna in the beginning of the twentieth century. Cavalry Lieutenant Fritz Lobheimer is about to end his affair with Baroness Eggerdorff when he meets the young Christine, the daughter of an opera violinist. Baron Eggerdorff however soon hears of his past misfortune...
Strange things happen in a revue theatre. The dancer Maria seems to be hunted by an invisible admirer. When the body of a probable FBI agent is found in a trunk the police asks FBI man Joe Como for help. Como gets interested in the revue theatre and an ominous transport firm soon. When he is receiving mysterious threatening letters he is sure that Dr. Mabuse has risen again. But what is going on at "Enterprise X" so that both the goverment and the mad genius in crime are interested in it?
