The Night of the Circus of Death - S3-E9
Revealing mistake: The single kerosene lamp West lights inside Bronzini's circus wagon not only lights up the entire room, it also impossibly casts his shadow on two different walls at once as he searches the various trunks. (00:14:50)
The Night of the Sudden Plague - S1-E28
Continuity mistake: West draws a chalk outline around Arte, but leaves a large gap at the top, on the right side of the figure's head. A few shots later, the gap has filled itself in. (00:43:25)
The Night of the Two-Legged Buffalo - S1-E23
Continuity mistake: Artemus is knocked unconscious and left alone on the floor of the train car when the prince is kidnapped. When he wakes up, he's lying in a different place and in a different position than before. (00:18:25)
Other mistake: "Night of the Bubbling Death": When West lifts the unconscious bad guy by the shoulders and prepares to drag him out of sight, you can see drag marks already in the dirt from previous takes. (00:21:10)
The Night of the Murderous Spring - S1-E27
Continuity mistake: When Dr. Loveless falls from the sill of the double window, the right half of the frame is open (the camera view being from the outside looking in). When West rushes outside to find the "body" missing, the right frame has closed itself and the left is now open. (00:08:40)
The Night of the Wolf - S2-E27
Revealing mistake: Talamantes' giant pet spider looks pretty impressive - until it moves and reveals that its wiggling legs are made of rubber. (00:23:30)
The Night of the Wolf - S2-E27
Continuity mistake: West's coat collar alternates from turned up to turned down several times as the shots change. This continues to occur throughout the episode. (00:17:30)
The Night of the Wolf - S2-E27
Visible crew/equipment: When the stagecoach pulls into the station, tracks from the camera truck can be seen in the dirt. (00:06:00)
The Night of the Wolf - S2-E27
Continuity mistake: The boot heel West removes to obtain his hidden explosive somehow reattaches itself by the time he leaps into the mining car. (He doesn't stop to put it back - he's running for his life from a pack of hungry wolves.) His boots also change from black to brown by the time he makes it outside and jumps on his trusty horse. (00:32:40)
The Night of the Wolf - S2-E27
Revealing mistake: Though the stock footage is of a real wolf, the animal West wrestles with is too-obviously a dog wearing a fake pair of wolf ears. In later wrestling matches between West and the wolves, the attacking beast is a stuffed prop that never moves its legs, head or jaws at all. (00:03:30)
The Night of the Tottering Tontine - S2-E16
Continuity mistake: There's a coiled wire sticking out of the spine of the book that electrocutes Baring. It's there in close-up, but disappears in full-shot. (00:42:50)
The Night of the Tottering Tontine - S2-E16
Continuity mistake: West demonstrates how the knife popped out of the chair upholstery when pressure was applied. His hand is inches from the blade in one shot, then disappears in the next close-up view. When it cuts back to the master shot, his hand is once again beside the knife. (00:20:20)
The Night of the Lord of Limbo - S2-E15
Continuity mistake: At the dinner table, the wine glasses vanish and reappear several times as the camera angles change. (00:16:50)
The Night of the Tottering Tontine - S2-E16
Deliberate mistake: The knife that has just killed one of the investors doesn't have a trace of blood on it. No one had time to clean it off. (00:20:00)
The Night of the Skulls - S2-E13
Factual error: The bizarre centerpiece on the murderers' banquet table has colored electric light bulbs showing in the skulls' eye sockets. (00:26:50)
The Night of the Ready-Made Corpse - S2-E11
Continuity mistake: Just after the street brawl at the beginning of the episode, all the dust vanishes from West's blue suit between one shot and the next. (00:01:20)
The Night of the Ready-Made Corpse - S2-E11
Revealing mistake: The town of Wickenberg has very peculiar sunlight: it casts shadows in several directions at once. Also notable is the far end of its main street, where a distinct line of demarcation reveals the presence of a painted studio backdrop. (00:00:10)
The Night of the Watery Death - S2-E9
Revealing mistake: When the Marquis meets West at the door, the landscape behind him has a give-away flaw: there are prominent wrinkles visible in the cloth backdrop "sky." (00:31:20)
The Night of the Watery Death - S2-E9
Continuity mistake: In the Mermaid Tavern, the abalone shell and West's black hat switch places on the table between takes. (00:02:40)
The Night of the Bottomless Pit - S2-E8
Continuity mistake: When he shows it to West, Mauvais holds the bottle of fire ants differently in the close-up than he does in the full shot. (00:34:30)