Factual error: An egotistical, prissy and dishonest lawyer like Mr. Fletcher wouldn't make the mistake of allowing his name to be misspelled on his office door. It reads "Winfred Fletcher." His first name, as it's pronounced throughout the episode, is "Winford." (00:26:50)
Plot hole: Well within earshot of the others in the small room, Curry comments to Heyes (purely for the viewers' benefit, since Heyes already knows it) that if Lom Trevors is killed, their amnesty will go with him. This information should have blown their cover, but for some strange (and unbelievable) reason, no one wonders what he's talking about. (00:19:00)
Continuity mistake: Heyes' horse is shot out from under him by the Chiracahua, forcing him to leave it behind and ride double with Curry. But when they return to Apache Springs, Heyes is again riding the same horse that was shot earlier. (00:40:40 - 00:43:30)
Continuity mistake: Molly's hands are tied with leather straps. But when Briscoe and Sam barge into the campsite, she pulls off her blanket and stands up with her hands free. A moment later, she once again has the leather straps binding her wrists. (00:30:15)
Audio problem: Final sound edits were incomplete on this episode when star Pete Duel committed suicide, so his dialogue is "looped" by another actor in several places. Though it's an excellent imitation, it is most noticeably not Duel's voice when Heyes and Curry are waiting for Harry in the opening scene, at the campfire with the Tapscotts, and when Harry tells them about the trial's outcome.
Continuity mistake: In memory of their friend Seth, who died in "Smiler with a Gun," Curry grew a mustache that he kept for several months. (As a running joke, Heyes kept prodding him to get rid of it and Curry kept refusing.) Because production and air dates differed, the mustache is, without explanation, missing here. It's back in the next episode, gone again in the next, and reappears for the last time in the next, where Curry finally shaves it off.
Visible crew/equipment: When Heyes and Curry leave the saloon and walk across the street, a microphone mounted on the camera rigging pops up into the shot at the bottom of the frame and follows along beside them. (This is visible in the US aired and vhs versions, but was edited out of both the BBC version and the recent dvd release.) (00:14:00)
Continuity mistake: During the dinner, Grace is in two places at once in the background. She's at the far right end of the bar drying a glass when the camera is on Mr. Fielding. When the camera reverses angles to show Mrs. Fielding, Grace has instantly jumped to a spot at the far left end of the bar, and is still drying the same glass. (00:12:15)
Revealing mistake: The night scenes around the campfire are plainly shot on an indoor set and not outdoors. Phony exteriors were seldom used on this series, but L.A. had suffered a record five inches of rain that forced the crew to either shoot indoors or fall behind schedule.