The Night of the Doomsday Formula - S4-E2
Revealing mistake: When West rescues the doctor's daughter from the flames by swinging down from his rope, the face of the stuntman playing the daughter for this scene is obvious.
The Night of the Gruesome Games - S4-E5
Revealing mistake: Just before Doctor Raker gets to the cliff before falling, there is a jet airliner seen in the sky just over his right shoulder.
The Night of the Gruesome Games - S4-E5
Revealing mistake: Midway in this episode, West is fighting two men in a bedroom. One of them is pushed into the green chest of drawers and breaks it. It is obviously a prop, because the front is a flat piece of painted wood to look like drawers; there are no drawers when this piece falls apart.
The Night of the Gruesome Games - S4-E5
Revealing mistake: The guide wire of the knife Dr. Raker throws at West is visible, as is the hole in the wall where the knife point lands.
The Night of the Kraken - S4-E6
Revealing mistake: Bubbles from the underwater camera crew are visible as West swims wearing the experimental diving gear.
The Night of the Kraken - S4-E6
Revealing mistake: The strings controlling the kraken's tentacles are visible as it attacks West and Aguila.
The Night of the Fugitives - S4-E7
Revealing mistake: Ross Martin's stunt double is obvious after Hallelujah Harry's coach begins exploding. The stunt man looks nothing like Martin and has an obvious bald spot on his head, whereas Martin did not.
The Night of the Camera - S4-E10
Revealing mistake: As Bosley Cranston fights the bad guy, Pat Paulsen's stunt double does not look like Paulsen - the stunt double is much younger looking.
The Night of Miguelito's Revenge - S4-E12
Revealing mistake: An obvious dummy floats out of the underwater coffin after West pops open the top of the coffin.
The Night of Miguelito's Revenge - S4-E12
Revealing mistake: At the beginning of the episode, as Jim West walks away from the newsstand vendor and closes the magazine, a 1967 ad for DieHard batteries ("The DieHard Fights the Common Cold") can be seen on the right-hand page of the prop magazine, in a modern sans serif font.
The Night of Miguelito's Revenge - S4-E12
Revealing mistake: Dr. Loveless' body flies out of the cannon before the cannon's blast propels him out the barrel.
The Night of Miguelito's Revenge - S4-E12
Revealing mistake: Stock footage of West and Gordon's train show it on a siding with no green foliage near it, but when West enters his private car, green bushes are seen very close to the train through the train car's open door.
The Night of Miguelito's Revenge - S4-E12
Revealing mistake: The steam-driven robot controlled by Dr. Loveless blinks as he is strangling West.
The Night of the Pelican - S4-E13
Revealing mistake: Towards the end of the episode when rocket one is fired, it launches very, very slowly with little force/velocity - obviously a prop.
The Night of the Winged Terror: Part 1 - S4-E15
Revealing mistake: West's fist does not connect with the face of one of the Brass brothers he punches.
The Night of the Janus - S4-E18
Revealing mistake: About half way through this episode, the hooded man West is chasing goes through double doors and closes them. West slams his body to open the doors. He steps back to ram his body into the doors again to force them open. Before he does, we see the doors sort of slightly move back and forth (this looks very odd and unnatural) before West slams them open.
The Night of the Bleak Island - S4-E21
Revealing mistake: Towards the end of this episode, West enters a small house. As the door opens, there is a small piece of furniture with drawers in the front and a red and white checker cloth on top. During the fight scene in this room, this chest of drawers is broken to reveal it is a prop that had the drawers painted on the front.
The Night of the Tycoons - S4-E23
Revealing mistake: The exact footage is used in the beginning of the first shot of this episode as well as the when the opening credits have stopped showing - two women walking on the lower right of the screen, two men riding side by side away from the camera, and the coach with one dark and one light colored horse riding into the camera on the screen's left.
