10 Horror Movie Mistakes Left In To Troll You

10. The Visible Crew Shadow - The Amityville Horror

Perhaps the most iconic moment in the original Amityville Horror is the bone-chilling sequence where Father Delaney (Rod Steiger) attempts to bless the Lutz family's haunted new home.

But Delaney quickly finds himself facing off against a bothersome swarm of flies, and just as he's about to double over in pain, the door opens and a voice whispers, "Get out," before then screaming the utterance at him.

It's a sublimely creepy scene on its own merits, but one which is elevated in a subtle way by a small mistake.

Moments before the door opens, we see a dark shadow briefly glide over the top of the frame and then disappearing from sight (2:35 in the below clip).

This is very clearly a piece of camera equipment or a crew member whose shadow accidentally got into shot, and yet the ambiguity of the end result is offputting enough to fit perfectly within a haunted house movie. And so, director Stuart Rosenberg evidently kept it in.