Horror Movie Stupid #458

When the intended victim walks into a room and the killer is waiting for her/him, quiet and still, and probably in a shadowy corner. But the killer doesn't attack until the victim has looked around the room and spotted the killer, and thus the victim has time to run away - or, at least, has time to defend herself. So, the element of surprise is lost AND the killer then has to expend extra (potential killing) energy chasing the quick-footed victim - usually through a darkened building. As a result of this stupid, the victim sometimes gets away! And lives long enough to be in the sequel! Madness!