Continuity mistake: Near the end, Heyes leaves the house with his gun strapped on, but when the camera angle reverses, he's not wearing it. It's back in the next shot, though.
Continuity mistake: Heyes is shot from the right and falls from his horse, grazed on the right side of the head. When he's recovering, however, the wound has moved to the left side of his head. (00:13:00)
The Clementine Ingredient - S3-E4
Continuity mistake: Due to the insertion of stock footage, Heyes and Curry ride the short distance to Clem's house on three different sets of horses.
The Posse That Wouldn't Quit - S2-E5
Continuity mistake: When Heyes and Curry stop Belle's wagon, Heyes is holding his hat in his right hand. When the shot changes angles, the hat jumps instantly into his left hand. (00:05:40)
Continuity mistake: When they meet Carlotta, Heyes steps forward to greet her wearing his hat. The shot cuts to a different camera angle, and his hat is instantly off and in his hand, without time for him to remove it. (00:03:45)
Continuity mistake: A wheezing Deputy Treadwell races across the street to the saloon to collect a posse. On the way, he's trying to buckle on his gun-belt, but he fumbles it and his gun falls to the ground near the hitching rail. No one picks it up, but he somehow has the gun back in his holster again when he runs out to ride away seconds later. (00:16:25)
How to Rob a Bank in One Hard Lesson - S2-E2
Continuity mistake: Harry sets the can of red putty down on the desk in front of Heyes. When he first places it, the label is facing the camera. When the shot cuts to a wider angle, the label has rotated itself 90 degrees and is now facing Heyes. (00:19:40)
Never Trust an Honest Man - S1-E14
Continuity mistake: Curry's shaving cream is smeared over his upper lip. Then it isn't. Then it is again. (00:10:40)
Continuity mistake: During the stage robbery, the bandits take everyone's guns, including Heyes' and Curry's. But when they unhitch the team horses and gallop after the bad guys, Heyes and Curry have guns again. (00:03:20 - 00:08:10)
Continuity mistake: Heyes and Curry have waded into the lake to recover the chest, so their pants are soaking wet up to hip level. But just a few minutes later, they're both completely dry again. (00:31:45)
Continuity mistake: The number of bad guys in Weaver's gang keeps changing. There are ten riders waiting on the ridge. All ten ride down the hill, but only five arrive at the bottom to rob the stage. Seven ride away afterward, but when they head off again to capture Heyes and Curry, there are only six. And when they surround the way station, there are again seven of them. (00:08:00)
Continuity mistake: Heyes is tied to a chair during the assault on the stage way station. But somehow his hair combs itself neatly back after being all over his forehead. A few shots after that, it's messy again. (00:30:40 - 00:33:05)
Continuity mistake: At the bank, we see Curry empty the jewel bag onto Binford's desk. Ten stones fall out. But in subsequent close-ups, there are twenty. Despite this, Heyes asks Binford to write a receipt for "ten little stones that sparkle and glitter a lot." (00:12:20)
Return to Devil's Hole - S1-E7
Continuity mistake: Clara's long hair is a windblown mess. But when Heyes ties the blindfold at the back of her head, her hair is suddenly neatly combed. One shot later, it's unkempt again. (00:17:15)
Which Way to the OK Corral? - S2-E20
Continuity mistake: When Georgette tells him she plans to become a chanteuse, Curry says he doesn't know what that is. But in an earlier episode, "Journey from San Juan," he called Michelle a chanteuse with obvious knowledge of the word's meaning.
Which Way to the OK Corral? - S2-E20
Continuity mistake: At the end, Heyes and Curry tie their horses to the back of the stagecoach and get aboard. In the following shot of the coach pulling away, the tied horses are no longer there. (00:48:00)
Continuity mistake: The first time Leslie visits Heyes and Curry in jail, they are in two cells right next to one another, Curry lying on a bunk in the cell to the left. The second time she visits to break them out, they are still in two cells next to one another, but the cell with the bunk is on the far left, Curry is the in middle cell, and Heyes is in the cell on the right. When Leslie points her gun at the lock of Heyes's cell door, he takes cover behind Curry, who is suddenly in the same cell with him with no bars between them. When Leslie brings Heyes the letter spike to use in picking the lock, the two are back in different cells with no bunk visible.
Continuity mistake: During the second funeral, Heyes' hair is wind-blown and disarrayed in close-ups, but neatly combed in all the full shots. (00:23:30)
Something to Get Hung About - S2-E6
Continuity mistake: After getting filthy in a street fight, Curry goes into the hotel and is immediately clean again.
How to Rob a Bank in One Hard Lesson - S2-E2
Continuity mistake: In the sheriff's office at the end, Heyes and Curry instantly switch positions between takes. (00:45:40)