Vienna is shaken by a mysterious series of murders. Except for Major Adolf Kottan, who is suspended. Indefinitely. Kottan's ex-police colleagues, the stiff-legged Paul Schremser and the trigger-happy Alfred Schrammel, take over the investigation and are completely in the dark. Next to each murder victim is a playing card with the inscription "Rien ne va plus". There are seven names on the back. Already three murders in 24 hours....
