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 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 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 Miguelito's Revenge - S4-E12
Continuity mistake: The barber chair West sits in has dark wood arm rests, yet the close up of his hand as he is being chloroformed by Loveless shows white arm rests.
The Night of the Gruesome Games - S4-E5
Revealing mistake: Just before Doctor Raker gets to the cliff before falling, there is a jet airliner seen in the sky just over his right shoulder.
The Night of Miguelito's Revenge - S4-E12
Continuity mistake: As Jeremy Pike holds the glass of brandy, it changes position from being up to down, then up again.
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
Continuity mistake: In the first boxcar scene, the train is shown standing among brown dirt and dead brush with the trees far off in the distant. When West opens the door to leave, there is a tree right in front of the door.
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 Miguelito's Revenge - S4-E12
Continuity mistake: When West and Pike pour a drink for "absent friend" Arte, the glass is placed between a newspaper and a silver dish. In the following close-up, the paper and dish have disappeared and the glass sits alone on the table. (00:49:50)
The Night of the Tycoons - S4-E23
Continuity mistake: In the last scene, there is close-up shot of the back of West's box car around dusk in the middle of dry brush. When Lionel opens the door to enter, the background is nighttime with a barely visible tree by the door.
The Night of the Tycoons - S4-E23
Continuity mistake: Three fourths into this episode, West fights several clowns in the bar. West's jacket becomes very dirty around his upper left chest and left knee areas. West runs through a nearby door into the hallway with completely clean clothes. As West is freeing Lionel, only the lower left knee is dirty; the jacket is still clean. The next full shot of West has the knee area clean.
The Night of the Tycoons - S4-E23
Continuity mistake: The first scene shows West riding into town wearing a blue shirt, a black kerchief, blue corduroy jacket with black leather lapels, black chaps, and a large belt buckle. After he gets off his horse to start walking, the next close-up of him walking shows him wearing a fancy blue vest, a blue neck piece, different blue jacket with blue lapels, and no chaps. West wears this for the remainder of the scene.
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 Plague - S4-E24
Continuity mistake: The last scene shows the back of the boxcar amid dirt and brown/mustard colored short grass. When Ms. Averi Trent opens the door to meet her fiancé, we see a lush green tree by the door.
The Night of the Cossacks - S4-E22
Continuity mistake: A bit after midway through this episode, while in the cave, West, wearing a blue shirt, is rolled into a hole on the ground. After the fall, he is wearing a white shirt. There is a close-up of West reaching into his jacket for rope. The close-up shows West wearing a blue vest. He is wearing the white shirt (no vest) as he begins to climb out of the hole, but when he gets out of the hole he is wearing a blue shirt (no vest).
