The Night of the Headless Woman - S3-E17
Continuity mistake: When West comes out of the water, he is soaking wet, but when he sneaks onto the stagecoach and fights with the driver, both his hair and clothes are dry.
The Night of the Underground Terror - S3-E19
Continuity mistake: After the third freeze frame, there is an outside fight. West has a major rip in his pants on the left inner seam from the knee to almost his waist - showing his white underwear during the fight. After the camera shot to Gordon and then back to West, his pants are now miraculously mended in the front and inner left leg area with a new large rip on the pant outer right seam from the knee to upper thigh.
The Night of the Arrow - S3-E16
Continuity mistake: In the last scene in the train car before President Grant walks in, two bottles are in the middle of the table (labels facing away from one another) with four glasses behind them. When the President enters and walks towards the table, both bottles are now placed further back (labels are now facing to the front) with the four glass and an ashtray in front of the bottles. After the President refuses a drink of wine, the table is back to the original setup - labels faces away one another and glasses are behind the bottles; the ashtray is no longer there.
The Night of the Arrow - S3-E16
Continuity mistake: In the scene before the second freeze frame appears, West is wearing a white shirt with a black neckerchief and blue corduroy jacket. In the close-up of West being handcuffed, he is wearing a blue vest and a different non-corduroy blue jacket. For the rest of the episode, West wears the original white shirt with black neckerchief and blue corduroy jacket.
The Night of the Running Death - S3-E15
Continuity mistake: In the last scene in the train's box car, after Princess Silva's departure, all three wine glasses are suddenly almost empty when in the shot before, they were more full. Also, both napkins on the table are rearranged between the two table shots.
The Night of the Iron Fist - S3-E14
Continuity mistake: Throughout this episode, the camera shots alternate in showing two trains. After West handcuffs Count Draja on the stage coach, a train is shown with two flags - one on each side of the smokestack (at slanted angles), and the bottom front grill is black. The second time the train appears, the flag is vertical off the side of the train, and the bottom grill has changed to red. The third time the train is shown, there are no flags. The fourth time the train appears, it is the original with two slanted flags and black grill. In the final train shot, the bottom grill has changed to red.
The Night of the Legion of Death - S3-E12
Continuity mistake: Throughout this episode, West's hair keeps switching from being parted on the left and being flat to being combed from the right in a sweeping higher volume style. Before the title appears, in the inside fight scene, it is parted on the right. In the scene after, the part of West's hair has moved to the left side and remains during the scene in the garden house. When West goes through the garden house trap door, right after he enters the home through a secret passage, West's hair is combed from the right with the sweeping more volume hair. After the fight in that room, as he is breaks through the glass, once outside, his hair goes back to being parted on the left and being flat again. The next scene his hair changes to the more full version. West's hair goes flat again when he is with Gordon in the garden house right before the third frozen panel appears (of the five panels in every episode). His hair changes to right combed version when he enters the home with Gordon through the secret passage and remains this way for the rest of the episode.
The Night of the Legion of Death - S3-E12
Continuity mistake: Before the title appears, there is an inside fight scene in which there is large dirt smudge on the seat of West's right side above his chaps. As he is exits the door, the back of his pants is completely clean.
The Night of the Vipers - S3-E18
Continuity mistake: Midway through this episode as West is ascending the outside wooden steps to Moriarty's office, his shirt has a vertical rip in his upper left chest area. Once West goes inside, that rip is no longer there but is replaced by a much larger vertical rip (much lower from his waist up to his chest). This larger rip is seen throughout this scene. When West leaves Moriarty's office, the larger rip is no longer there and the original smaller higher rip re-appears. In the following scene when West is changing his shirt, the smaller upper rip has been replaced by the much larger lower vertical rip.
The Night of the Vipers - S3-E18
Continuity mistake: As the boxing match moves from inside to outdoors, West's shirt is drenched on the back, as well as around the collar and top front of the shirt. Outdoors, those areas are dry. When the fight moves by the water, West shirt is torn on his front left (length from the 2nd to 4th buttons). At the end of that scene, that tear no longer shows, but a new one appears much higher (length from 1st to 2nd buttons) and is closer to his arm in the upper left chest area.
The Night of the Vipers - S3-E18
Continuity mistake: Before the title appears for this episode, in a long screen shot, West is knocked out face-up with both arms extended above his head; only his left elbow is touching the knocked out bad guy next to him. The next immediate close-up shot of West shows West with only his right arm extended above his head and his body is much closer next to the bad guy. As the title appears, West is face-down resting on his right arm when he starts to regain consciousness.
The Night of the Vicious Valentine - S2-E20
Factual error: Artemus opens a cabinet to reveal a map of the United States where he and West are keeping track of the alphabetical murders. The map is far out of date for the Grant administration, with what became the state of West Virginia during the Civil War still part of Virginia, and missing entirely the states of Nevada, Oregon, Kansas, Nebraska, and Minnesota-all of which were part of the union before President Grant took office. (00:04:45 - 00:06:30)
The Night That Terror Stalked the Town - S1-E10
Continuity mistake: When Dr. Loveless records his and West's conversation, West says "You belong in jail." When Dr. Loveless plays the recording for Janus in a subsequent scene, West says "Jail is where you belong." (00:14:05 - 00:16:40)
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 Amnesiac - S3-E22
Continuity mistake: When amnesiac West emerges from between the buildings, it is dark outside, but when he encounters the cowboy assaulting the woman, it is now suddenly broad daylight.
The Night of the Skulls - S2-E13
Factual error: This episode suggests that the presidential order of succession is Vice-President, Secretary of State, then President Pro-Tem of the Senate. It's actually the Vice-President, then Speaker of the House, then President Pro-Tem of the Senate.
The Night of the Colonel's Ghost - S2-E24
Continuity mistake: The opening scene of this episode shows the train moving at twilight. West and Gordon are looking out the window, and it is pitch black. Right before West goes outside, the camera shot of the train wheel shows light (either twilight or moonlight) on the wheel. The very next scene has West with the train door open, and it is pitch black outside. (00:00:05 - 00:00:35)
The Night of the Skulls - S2-E13
Character mistake: There are seven mourners dressed in black surrounding Gordon's casket - three on each side and one by the funeral officiator (who is the disguised Gordon). Later in the scene when West is talking to the disguised Gordon, Gordon says, "How do you like that - six mourners..." (00:05:20 - 00:07:10)
The Night of the Tottering Tontine - S2-E16
Plot hole: They said they couldn't leave the room because the door wouldn't open and then they all went to their rooms. How did they get out?
The Night of the Deadly Bed - S1-E2
Continuity mistake: In this second episode, West's chest is clean shaven, whereas in the previous episode, the pilot, his chest is very hairy.