Deliberate mistake: When the police come into Max's office near the end, they force Franz Liebkind to drop his gun. Immediately after doing so, Franz cringes in pain, implying that the gun was dropped on his foot. However, the gun was dropped about 2 feet from where his foot would have been. It would have been literally impossible for the gun to have hit his foot.
Movie_Freak 1
15th Feb 2007