That's the big question. I mean this is not the same kind of why, why Michael Myers is killing or the Hitcher-Highwaykiller. I think the end of the film doesn't make sense. Also the fact that they want to kill themselves or at least Emmet. Why they didn't plan to play the badly wounded who survived it, like in the end of "Scream" which is anyway copied. And what's the motive of Mandy Lane at all? Emmet does everything what Mandy wants from him, but why does she do all that? There seems to be no reason to take revenge for something or anything else? Only that they go on her nerves that they all want her? That's too airy. Maybe the friends of the guy who crashed at the edge on the swimming pool gave him from then a hard time. But there's nothing to see about that in the movie. And even though it wouldn't make sense, because why should Mandy help Emmet to take revenge when she's not giving' a damn about him?

The reasons why i'm giving it not less than 5 points is that the film has a nice photography, an acceptable soundtrack, a promising start and the direction is a little better than the usual teen horror movies. It's a bit more realistic slasher and two or three elements are interesting.

But considering that it became so much so good criticisms this is NOT such a great or innovative slasher movie. No, it isn't!

A frustrating experience, because so many elements are just right. Amber Heard is absolutely perfect in the title role, with a well-balanced mix of class, innocence, beauty and a great sense of mystery, which is absolutely essential to this film. You always feel that there's more to her than meets the eye, and so the film does indeed succeed in holding your interest. Darren Genet's cinematography applies many subtle effects to create an atmosphere of wonder and suspense. A feeling which is strengthened by a soundtrack, consisting mostly of melancholic adaptations of sometimes almost unrecognizable classics.

As a psychological thriller this might have made a very effective movie, but unfortunately there is a pointless prologue which explains too much of what we are about to witness. 'Mandy Lane' gives the impression of an intelligent psychological drama, which the production company felt wouldn't be a commercial success, and was therefore turned into a rather mediocre - and minor - gorefest for the yahoo-crowd. This could have been - and probably should have been - one of this year's best films, but it's ruined by extreme violence and a rather silly finale.

"Mandy Lane" (Amber Heard) is the most beautiful and desired person at her high school and all of the guys lust after her. But while she is nice to everyone she only has one person she considers a friend and he is the social outcast named "Emmet" (Michael Welch). Then one day she surprisingly accepts an invitation to go to a pool party at the house of another student named "Dylan" (Adam Powell) with one provision-that Emmet is allowed to go too. Since Dylan is obsessed with Mandy he reluctantly agrees. Once there Dylan tries to get Mandy to take off her clothes and Emmet interferes. Dylan punches Emmet who then goes onto the roof to get away from the crowd. Eventually Dylan goes up to the roof to try to get Emmet down. Since Dylan is quite drunk Emmet convinces him that Mandy would be very impressed if he jumped from the roof into the pool. Dylan does and bangs his head on the concrete which kills him instantly. Everybody, including Mandy, rightfully blames Emmet. Because of this Mandy decides to start hanging out with some of the more popular students and eventually accepts a weekend invitation out in the country with 3 guys and 2 other girls. What Mandy doesn't know is that the intent of the vacation is to drink and have sex and she is the primary target of the guys. But things begin to take a turn for the worse once they get out there. Anyway, rather than reveal the rest of the story and possibly ruin the film for those who haven't seen it I will just say that this was a decent slasher film for the most part. Although some scenes were definitely slow it had more depth than most films of this type. It also had 3 very attractive actresses in Whitney Able (as "Chloe"), Melissa Price ("Marlin") and the aforementioned Amber Heard. The ending is also quite wicked. All things considered then I rate this movie as slightly above average.