The Night of the Murderous Spring - S1-E27
Revealing mistake: Kitten bends apart the cell bars, allowing West and Gordon to escape. But when they brush against it on the way out, one of the "iron" bars gives, flexing like the rubber that it probably is. (00:40:30)
The Night of the Burning Diamond - S1-E26
Revealing mistake: Artemus is sampling beef stroganoff from a pot on the stove. He then carries the kettle by its swinging handle across the room, tilting it just enough to reveal to the camera that it's really empty. (00:43:10)
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 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 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 Raven - S2-E3
Revealing mistake: When the marshal opens the train's rear door and comes in to arrest Lana, you can see wrinkles in the "sky" outside. It's really a painted cloth backdrop. (00:48:40)
The Night of the Vicious Valentine - S2-E20
Revealing mistake: The red-headed villain falls face first into the wedding cake. The front of his face is covered with cake and icing. West "punches" him on the face - but punches are not real - that is why West has no cake or icing on the fist that "punched" the face covered with cake and icing. (00:46:30)
The Night of the Tartar - S2-E19
Revealing mistake: When West opens the wall safe in the personal train, there is no locking mechanism shown on the opened door. Without this, the door of the safe could just be opened without rotating the combination lock on the outside. (00:01:50)
The Night of the Infernal Machine - S2-E14
Revealing mistake: Right after Zeno Baroda says, "M'Guigan, I'm going to kill you," he shoots at the door. Before the bullet is discharged, one can see the door is already damaged where the door is about to be shot. Also, one can see the streak (moving from the left to right) of the prop used to cause more damage on the door from the bullet's impact. (00:27:30)
The Night of the Eccentrics - S2-E1
Revealing mistake: Two scenes after the opening credits, West fights the strongman Titan. When Titan throws West (who is horizontally positioned on Titan's shoulders) down to the ground through the circus tent, a mattress upon which West lands is mistakenly exposed.
The Night of the Sudden Plague - S1-E28
Revealing mistake: In the opening scene in the saloon when Gordon takes the glass from the motionless bartender's left hand, the bartender's right hand keeps slightly moving the bottle.
The Night of the Burning Diamond - S1-E26
Revealing mistake: In the fight scene before the second freeze frame during the fight scene, the splicing of the film is off because we see the stationary West shifting a few inches as Midas appears and disappears on the staircase in front of him.
The Night of the Human Trigger - S1-E12
Revealing mistake: In the next to last scene of this episode during the Sawtooth earthquake, while boulders are falling and trees are being uprooted, West, Gordon, and Faith are not struggling to keep their balance so as not to fall, they are just motionless standing - something that cannot happen with such a strong earthquake. The camera, which is shaking, attempts to make it look as if the three are shaking with the earthquake.
The Night of the Human Trigger - S1-E12
Revealing mistake: In the opening earthquake scene right before the freeze frames appear, West and Gordon are in the bar. The glasses and pitcher on the bar by the bartender, the bottles of liquor behind the bartender, the bottle on top of the piano, and the ashtrays on two tables never move out of place, even though other tables have broken, chairs have toppled, the ceiling is destroyed, and the support beam falls. It is obvious the camera is doing the shaking, not the ground.
The Night That Terror Stalked the Town - S1-E10
Revealing mistake: During the final scene where West and his double, Janus, are shooting at one another, the two look identical to one another. West goes to the roof and jumps off onto Janus who is by the cannon. However, the revealing mistake is the original looking Janus is playing the role of West diving off the roof, and the one who is fighting Robert Conrad who is supposed to be playing his double, Janus, is standing by the cannon. When the two begin to fight on the ground, one should not be able to tell the two apart, but it is apparent the faces are different. The mistake is fixed when the two get off the ground and now both fighters look like West.
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.
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 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 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 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.