Revealing mistake: The solid brick wall bends like vinyl when Colonel Malloy touches it.
The Devil Is Not Mocked - S2-E19
Revealing mistake: Krantz's fingernails digging in to the wood flooring as he is being dragged out the door do not match the pre-scratched finger nail tracks in the floor.
Revealing mistake: As Sharsted enters Gingold's apartment, he enters directly from the sunlit outdoors. The interior shot of Gingold's does not show the outdoors when the door opens, but a darkened interior movie set.
Revealing mistake: The actor playing Sgt. Imo uses a small branch on the ground as the mark where he is to stand. He also looks down to ensure he is standing in the right place.
The Funeral - S2-E44
Revealing mistake: The strings moving the arms of the red-eyed ghost are visible.
The Funeral - S2-E44
Revealing mistake: The support wires on the bat are visible as it flies out the window.
Revealing mistake: The seam of the mermaid's fin suit is visible as she twists and turns towards the boat's gunwhale.
Deliveries in the Rear - S2-E53
Revealing mistake: The cadaver on the dissection table is breathing.
You Can't Get Help like That Anymore - S2-E58
Revealing mistake: The robots in the display cases at Robot-Aids, Inc. are breathing and/or moving slightly.