Bob is facing the camera. Unknown to him, an enemy is rising up behind him. It may be a giant monster whose head is rising up to his level, an enemy in an aircraft, or a much smaller enemy rising up right behind Bob. The important details are that Bob has no idea of the danger coming, and that the shot is continuously from in front of Bob until he has some inkling of the danger. May result in a Right Behind Me and/or Oh Crap. If Bob isn't a main character, he may be killed and never know what killed him. If the enemy is in a vehicle, there's a good chance it's a Surprise Vehicle. Can be subverted by an Offhand Backhand.