I am distantly related to Heini Grünbaum, and I don't mean to be rude but this movie is not very good. First of all, I am a big horror connosour, and this movie lets horror connoisseurs down. Because it isn't horror. It's rather some sort of sadism, and Sam Peckinpahsk violence. The reviewer who thinks the scene with the wife, who moans "en vatpik!" is funny ought to rethink. It is not funny. It is merely pornographic. Moreover, the main character has no motive for going on a murder spree. There is no cause for the effect. It is highly unlikely that such an innocent episode should trigger such frenzy and madness. Surely the every day stress most people experience are worse than what the main character encounters! To make it even more crazy, the black girl is not an accomplice in anything thus he has no motive for treating her the way he does. Violence like this are usually perpetrated by psychopaths such as Peter Lundin who have a malfunctioned brain and nervous system. There is nothing to indicate that the main character has any. He is just supposed to be motivated by "jealousy". That's ridiculous. That is certainly not the way jealousy works.