Schwestern der Nacht (2002)

When a couple of nosey guys realize that the house down the street is being used to shoot porn they can't help but take a peek. But, when one of them is discovered and finds himself face to face with one of the girls ... well ... we all know what happens when a sexy XXX starlet and a horny fan meet-there's a sudden rush, fantasies are born and obessions begin. Poor guy, no one told him that porn stars can be stalkers too!