A young man visits a psychiatrist and tells him that he has been following a trail of murders he believes were done by Jack the Ripper. He theorizes that Jack the Ripper murders people so that he can use them for blood sacrifices to the gods to receive eternal youth. He convinces the psychiatrist to introduce him to his friends, because he believes Jack the Ripper poses as an eccentric artist. He tries to goad Jack the Ripper out at a party, but fails. The next day, he confesses his motives for going to the party to the psychiatrist, and the psychiatrist reveals himself to be Jack the Ripper right before he kills the young man.