Continuity mistake: While he's working to open the safe, Heyes is wearing his coat. Then he isn't. Then he is again. (00:19:20 - 00:20:30)
Wrong Train to Brimstone - S1-E4
Continuity mistake: Heyes and Curry enter the train depot at 8 pm. It's dark outside. When they come back to the platform, it's daylight. When the train leaves, it's dark again. Midway through its 60-mile journey, there's another shot of the train in daylight, followed again by more night shots. (00:07:30)
The Man Who Broke the Bank at Red Gap - S2-E17
Continuity mistake: Heyes and Curry are waiting at the granary at 10 p.m. at night when they hear the posse approaching. In the next two shots of the riders coming over the hill, they're under a blue sky in full daylight. (00:15:05)
Never Trust an Honest Man - S1-E14
Continuity mistake: The part in Mr. Harlingen's hair changes sides several times while he's examining the jewels with his son. (00:25:00)
Six Strangers at Apache Springs - S2-E7
Continuity mistake: Despite the episode title, there are only five strangers in this story. Even if you counted Caroline and Smithers, who live there and so aren't among the strangers, they'd make the total seven.
Alias Smith and Jones (90 min.) - S1-E1
Continuity mistake: When Miss Porter enters the office, the coffee mug on Lom's desk jumps from the blotter onto the wood surface between shots, even though no one touches it. It also reverses its orientation: the handle switches from pointing left to pointing right. (00:18:50)
Alias Smith and Jones (90 min.) - S1-E1
Continuity mistake: Harker confiscates firearms from five Devil's Hole members who are playing poker in the saloon. The sixth member is down in the tunnel, and didn't turn over his gun. Yet when the outlaws go to collect their weapons, six are given back their side-arms. (00:49:00 - 00:55:50)
Journey from San Juan - S1-E13
Continuity mistake: Curry kisses Michelle outside her hotel room. When the camera angle is on him, his right hand is on her shoulder. When it switches to her, his hand is instantly down at her waist. (00:15:10)
Wrong Train to Brimstone - S1-E4
Continuity mistake: While Heyes and Curry are guarding the gold shipment, Heyes' hat keeps changing positions on his head between takes. First it's down over his hairline, then it's pushed back, etc. (00:26:50)
Plot hole: Early in the episode, the sheriff starts going through his pile of wanted posters. According to the story line, 18 days then pass. At the end, the sheriff, standing in the exact same position and wearing the same clothes, is just finishing his search through the posters.
Alias Smith and Jones (90 min.) - S1-E1
Factual error: Kyle strikes a match on the wooden floor to light the dynamite's fuse. In the early 1880s (the era in which this series is set), a portable flint-and-tinder kit was the common method of sparking a light. While "strike anywhere" matches had been invented by this time and were quite the rage in Europe (despite an alarming tendency to explode due to the volatile chemicals used), they were an unknown commodity on the American frontier until well after the turn of the century. (00:03:00)
Continuity mistake: In his showdown match with McCreedy, Heyes deals out five cards in each row on the table. But in the next shot, there are six cards in each row. (00:31:30)
Audio problem: Just before Curry shoots the rattlesnake, Heyes says, "Don't anybody move." But his lips don't move when he says this. (00:11:20)
Alias Smith and Jones (90 min.) - S1-E1
Continuity mistake: The Devil's Hole Gang is referred to as "seven sorry lives of crime." But there are only six of them. (00:44:10)
Alias Smith and Jones (90 min.) - S1-E1
Revealing mistake: The electric light bulb in Lom Trevors' lamp is visible. In one shot, you can even see the filament wires. (00:18:15)
Jailbreak at Junction City - S2-E3
Revealing mistake: The outlaws all have their hands tied behind their backs. But the one wearing glasses, apparently unaware that he's in the shot, brings both hands up to push the slipping glasses back up on his nose, then quickly puts his hands behind his back again.
Don't Get Mad, Get Even - S2-E21
Plot hole: In the bath house at the beginning, Heyes and Curry, who should be using their aliases, call each other by their real names several times while the proprietor, who's a stranger to them, is preparing hot water nearby. The man must not be up on "the two most successful outlaws in the history of the west," though: he doesn't race off to turn them in and collect the reward. (00:04:40)
Alias Smith and Jones (90 min.) - S1-E1
Factual error: The telegram delivered to the sheriff's office is in an envelope with a machine-cut, transparent cellophane address window. This type of envelope wasn't manufactured until well into the 20th Century. (00:58:15)
Revealing mistake: At Armandariz's hacienda, a power cord is peeking out from behind the large chest against the wall in the main room. (00:18:00)
Factual error: The sheriff and his posse raise huge dust clouds as they gallop down the road. But the stagecoach they're chasing, with four horses and four wheels, is on the same road and isn't raising any dust at all.