Playboy Red Mitchell suffers from chromosome malformation X+YY, a dangerous deformity of the libido. At night, driven by inner turmoil, he roams the streets of the city and murders women. Preferably young, pretty girls who become his victims after he has seen them naked in his imagination with his X-ray vision and then undresses them in real life to kill them. But he soon leaves traces behind, and a cunning detective who suspects his chromosomal drive is on Mitchell's trail...

A teenager named Kurrat mysteriously disappears from a German boys' school. Then a teacher is found dead; the mystery grows.

Josefine is a young streetwalker in Vienna at the turn of the 20th century. She manages to sleep her way to the top by marrying a British aristocrat, and she delights in telling ribald stories of her sordid past to moralistic prudes.