The Night of the Raven - S2-E3
Plot hole: Antoinette is making miniature clothes for the soon-to-be shrunken West, but when West drinks the antidote to make him normal-sized, he is wearing the same clothes which would have been shredded as he grew back to normal size.
The Night of the Raven - S2-E3
Continuity mistake: Dr. Loveless leads West and Gordon into a room that is dark when seen from the outside, but when they walk into the room, it is lit up.
The Night of the Big Blast - S2-E4
Continuity mistake: While Artemus talks to Lily at her dining table, he clasps his hands behind his back and is standing up straight. When the shot cuts, he's suddenly leaning forward with his left arm extended to the table. (00:11:25)
The Night of the Big Blast - S2-E4
Revealing mistake: The "corpse" Miklos wheels into Dr. Faustina's laboratory is pretty healthy for a dead guy: you can see his chest moving up and down as he breathes. (00:27:00)
The Night of the Big Blast - S2-E4
Revealing mistake: During the sword fight on the stairs, Artemus' stunt double's face is in plain view in several shots. (00:30:00)
The Night of the Big Blast - S2-E4
Visible crew/equipment: At the end of the sword fight, the moving boom shadow is visible on the balustrade at the right of the screen. (00:30:05)
The Night of the Big Blast - S2-E4
Continuity mistake: The large black straps hanging off the sides of Dr. Faustina's medical table disappear when West and Gordon burst into the lab. (00:44:00)
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 Big Blast - S2-E4
Continuity mistake: Halfway between the opening credits and first freeze frame, Gordon and Ms. Lily Fortune are seen entering the private train car in the dark of night, but the shot before their entrance is of the front of the private train car at twilight. That shot of the train car also shows a backwards number 3.
The Night of the Big Blast - S2-E4
Revealing mistake: The face of the stuntman playing the bomb-carrying Artemus Gordon double is obvious, and looks nothing like Ross Martin, who plays Gordon.
The Night of the Big Blast - S2-E4
Other mistake: After Artie and Mr. Peters leave the Fortune ladies at their table, Artie continues walking even after the Mardi Gras mask he is wearing falls off.
The Night of the Returning Dead - S2-E5
Continuity mistake: In the barn, when Artemus jokes about "smoked ham," he and West are standing within inches of each other. Then the shot cuts to a wider angle, at which point they're several feet apart. (00:21:20)
The Night of the Returning Dead - S2-E5
Continuity mistake: It's just past nightfall when the townspeople enter the courthouse. They aren't there more than half an hour, yet it's daylight when they emerge. Then a shot from inside shows that it's night again. (00:28:30 - 00:33:30)
The Night of the Flying Pie Plate - S2-E6
Revealing mistake: After they're carried inside and placed in chairs, one of the "unconscious" women moves her arm into a more comfortable position. (00:33:00)
The Night of the Flying Pie Plate - S2-E6
Continuity mistake: At the end, the wagon tailgate falls open during the scuffle with the bad guys. When West fights his way to the front and drives the wagon away, the tailgate has somehow tied itself up again. (00:48:00)
The Night of the Flying Pie Plate - S2-E6
Revealing mistake: When the townspeople spill out onto the town's streets after hearing the noise from the sky, the horses tied at the hitching posts never move nor flinch through the entire scene and are all in the same pose, indicating the horses are props and not real.
The Night of the Flying Pie Plate - S2-E6
Other mistake: When Gordon and the troopers bring the unconscious Venusian ladies in and place them in the chairs, the chairs are almost in the middle of the room. When the girls come to, the backs of the chairs are right up against a wall.
The Night of the Flying Pie Plate - S2-E6
Revealing mistake: The wires used to open and close the pie plate's entry hatch are visible.
The Night of the Flying Pie Plate - S2-E6
Visible crew/equipment: The shadow of a boom mic is visible on a table top in the saloon.