X + YY: Formel des Bösen
- Mwaka: 1970
- Nchi: Germany
- Aina: Crime, Thriller
- Studio: Brünnstein-Film
- Neno kuu: exploitation, playboy, serial killer, hormones
- Mkurugenzi: Teja Piegeler, Pavle Jovic
- Tuma: Ljubiša Samardžić, Kai Fischer, Miloje 'Mića' Orlović, Albert Hehn, Leonina Pavlović, Stefan Zessner
