X + YY: Formel des Bösen
- વર્ષ: 1970
- દેશ: Germany
- શૈલી: Crime, Thriller
- સ્ટુડિયો: Brünnstein-Film
- કીવર્ડ: exploitation, playboy, serial killer, hormones
- ડાયરેક્ટર: Pavle Jovic, Teja Piegeler
- કાસ્ટ: Ljubiša Samardžić, Kai Fischer, Miloje 'Mića' Orlović, Albert Hehn, Leonina Pavlović, Stefan Zessner
