The Night Dr. Loveless Died - S3-E4
Continuity mistake: In the opening scene, a cowboy sitting atop the balcony above Big Brad's Bar gets up and approaches the balcony's edge twice.
The Night of the Bubbling Death - S3-E1
Revealing mistake: As West drags the body of a bad guy out of the scene, the supposedly unconscious man is holding his head up so as not to have his head dragged through the dirt. A truly unconscious person's head would flop back on to the ground.
The Night of the Avaricious Actuary - S4-E11
Continuity mistake: The letter from the Cyclops Insurance Company that Gordon pulls out of his pocket is folded, wrinkled, and well-worn. In the close up of the same letter West reads, the letter is white, pristine, and not wrinkled or folded.
The Night of the Brain - S2-E21
Revealing mistake: Mr. Braine screams as his steam-powered chair crashes into the bandstand. If you look closely at the next shot, just before the explosion, you can see that the dummy now in the chair has its head bowed forward. It also has light brown hair, rather than Mr. Braine's silver hair. (00:47:10)
The Night of the Bubbling Death - S3-E1
Continuity mistake: When West breaks into the hacienda, the double windows he enters by have quite a bit of glowing light behind them. Yet when he climbs into the room, it's completely dark inside. (00:22:00)
The Night Dr. Loveless Died - S3-E4
Visible crew/equipment: The arm of the actual carriage driver is visible poking through the back of the carriage, slapping the horse and signaling it when to stop/proceed with a second set of reins, showing the actor in the carriage was not controlling the horse at all.
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 Jack O'Diamonds - S3-E5
Continuity mistake: As West lowers himself down the face of the cliff with his hand-held rappelling tool, West does not have a safety harness attached until a few shots later, then the safety harness disappears.
The Night of the Brain - S2-E21
Continuity mistake: When West and Gordon enter the print shop, they see Mr. Blackhurst's corpse sitting at his desk, with his head up, but when West and Gordon approach Blackhurst, his head is now noticeably bowed forward.
The Night of the Brain - S2-E21
Revealing mistake: When Gordon is looking outside on their train car platform, it is obvious the background desert scrub is a painted scenery flat.
The Night of the Wolf - S2-E27
Factual error: Several airplane contrails are visible in the sky as West gallops his horse to Stefan's coronation.
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 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 the Pistoleros - S4-E19
Continuity mistake: As West shoots it out with a bandito, the door jamb West uses for cover has a varying amount of bullet holes in it.
The Night of Miguelito's Revenge - S4-E12
Other mistake: The sandbag that almost falls on Pike and West splits wide open upon impact with the floor, but subsequent shots of the bag show it almost intact.
The Night of the Arrow - S3-E16
Factual error: The soldiers toss Artemus into the cell, slam the door and walk away. But they never produce a key or lock the cell door. He's somehow locked in anyway, though. (00:24:30)
The Night of the Big Blast - S2-E4
Visible crew/equipment: The boom mic's shadow is visible as Lily Fortune and her mom enter the parlor of West and Gordon's railroad car.
The Night of the Big Blast - S2-E4
Revealing mistake: It is obviously a dummy body that West and Gordon net, then drag behind the carriage before the dummy body explodes.
The Night of the Bubbling Death - S3-E1
Factual error: The skeletons in the dungeon hanging from shackles and standing upright in cages would have been piles of bones on the ground due to cartilage and tendons decaying, which hold bones together.
The Night of the Circus of Death - S3-E9
Factual error: At the mint, Arte hides in a broom closet. He carries nothing in (nor did he hide anything in there beforehand), yet he emerges later in an "old man" disguise, wearing a wig, hat, mustache, false nose, glasses and janitor costume. Magic closet? (00:35:00)
