SPOILER: Why did the murderer do what he did to the victim?
SPOILER:
I didn't see the movie but after reading Wikipedia and other people's posts on this board, I know the storyline.
I read that the killer, Marzin, supposedly lured the victim by being her date. He raped and killed her then committed some willful, heinous act by bleaching her corpse inside and out. Did the movie ever explain his motivation for doing something like that? His rape and murder were evil enough, but the follow-up bleaching, tells me the victim harbored some kind of rage and hate towards the victim either in some direct way, or he was projecting his rage and hate on an innocent, helpless young woman.
I'm assuming that in the movie had they investigated his childhood, they would have discovered some real twisted sh't. In real life every time the police catch a particularly evil murderer or serial killer, his life history reveals a story of twisted tragedy, abuse, mental illness that warped a human being into a monster bearing a human face.