Revealing mistake: Right in the beginning of the movie, we see young Viktor holding a gun to a young girl, about to shoot her. The gun is a revolver and as it comes into focus, you can see there are no bullets in the gun. This is part of a later scene in the movie where Viktor kills his first two people. As he's shooting, you can again see there are no bullets in the gun. (00:01:20 - 00:23:10)
Revealing mistake: When young Viktor does his first two kills, he is using a revolver. I think a 38 Special by the looks of it. As he shoots, there is no kick to the gun. (00:23:25)
