X + YY: Formel des Bösen
- बर्ष: 1970
- देश: Germany
- विधा: Crime, Thriller
- स्टुडियो: Brünnstein-Film
- कीवर्ड: exploitation, playboy, serial killer, hormones
- निर्देशक: Pavle Jovic, Teja Piegeler
- जात: Ljubiša Samardžić, Kai Fischer, Miloje 'Mića' Orlović, Albert Hehn, Leonina Pavlović, Stefan Zessner
