I'm looking for a porn movie, from the 2000s (I guess), that follows a story of somebody that has some sort of remote control that can make people will for sex. I remembe the following scenes:
- First scene a brunette girl rides a guy in the beginning, and murders him with a knife cut in his neck;
- There is a scene with four girls and a guy. One of the girls has braids and only ass rides the guy at the scene end;
- The last scene is 2 girls and 2 guys. The 2 girls is played by only one actress, that simulates twins (one blonde and one brunette)

Thanks for any help!