About 30 minutes into the film, when the guy is supposedly getting shot in the back of the head, pause the video and freeze-frame it. You will clearly see that the guy being shot move out of the way, the gun fire when he was out of the way, and red stuff that was made to look like blood in the normal speed, actually come out of the gun, therefore not even remotely looking like the guy had been shot. It takes a good eye to see this one, but it is pretty obvious.