It is a great movie but the point is no one wants to die. Human are complex so it can be possible too. Some are like, "If I will have this and this, then I will be happy and if not then I will find some other alternative. I am afraid of dying." and some are like, "If I will not have this and this then there is no point of continuing life" and this kind of people can sacrifice there life. But for a cause, like rape and murder, then I have to think for this. Maybe no one wants to have any such accusation before dying. This makes the movie unrealistic in most of the cases.
The girl Berlin, I thought she was told to accuse him of rape at the first place so that everyone must think later that it could be him for sure, well if not then David himself made his life miserable by doing sex with her. He was married and he had one son too.