Continuity mistake: Between shots, the bodies of both Kathy and the Kid change positions on the floor. Kathy's has moved away from the stairs, and the Kid's reverses directions.
Continuity mistake: In full shots, the judge's cigar is in his mouth. Every time a close-up is intercut, the cigar is in his hand.
Continuity mistake: Twice in this episode (once in the saloon and once in the sheriff's office), Number 6's coat is unbuttoned when he's inside, but has instantly buttoned itself up when he runs outside.
Continuity mistake: The drink Kathy brings the Kid changes positions on the table between takes. She places it on top of the small book, but it moves itself to the larger book, then back to the small one again, and so on.
Continuity mistake: While Number 6 is being dragged behind the horse, a red bandanna tied around his hand disappears and reappears several times between shots.
Continuity mistake: While Number 6 is in the jail cell, he lights a cigar and starts blowing smoke. Just a few shots later, the smoke has vanished and he lights the cigar again.
Continuity mistake: At the final shoot-out, the Kid's hat lands and settles right next to his head after he falls. When Number 6 walks past him a few moments later, however, the hat has somehow moved itself more than a foot away.
Continuity mistake: The judge has two glasses in front of him on the bar. When the shot changes, there's just one glass.
Continuity mistake: In the saloon, between close-ups and cutting back to the master shot, the glasses in front of the men at the bar change positions repeatedly.
The Girl Who Was Death - S1-E15
Continuity mistake: When the bulldozer is on fire, the raging flames have died down completely in one shot, but are instantly burning brightly again in the next one.
The Girl Who Was Death - S1-E15
Continuity mistake: When Number 6 is trying to stop the rocket launch, the computer console in the center is emitting smoke in close-ups, but not in long shots.
The Girl Who Was Death - S1-E15
Continuity mistake: In the interior shot of Number 6 exiting the lighthouse, the red doors are open. When the shot cuts to an exterior view of him coming out, the doors are closed and he opens them again.
Continuity mistake: When No.2 is writing on the blackboard, in Question A. The capital letter "F" changes several times between the long shots and close ups. Also in Question B. The position of the first "T" in the word together also shifts position during the same shots, showing that the scene was filmed twice.
Continuity mistake: In the court room scene, Number 6 has wind-blown hair in the master shot, but is nicely combed up and neat in all the close-ups.
Continuity mistake: When Number 6 is pushing him on the swing, the Butler's hands and arms change positions instantly between shots. One moment, he's holding the rope with his hands: in the next, he has his elbows crooked around the ropes instead.
Continuity mistake: The sling that's been around the Butler's arm and shoulder vanishes after he fans Number 2 with a towel. It's back a few shots later.
Continuity mistake: During the interview, the Butler puts a coffee pitcher down beside Number 6. In the next shot, it has disappeared.
Continuity mistake: While he's making his graduation speech and demanding to know why Number 6 resigned, Number 2 has a mortarboard tassel wardrobe malfunction: it keeps changing sides between shots.
Continuity mistake: At the end, Number 6 and the Butler catch a bus near Westminster Bridge in London. The bus that drives up and stops for them has no back platform. But when they board, the style of bus suddenly changes to the more common type with an entrance in the back.
Continuity mistake: In the final scenes, as helicopters are taking off from the Village, the bell tower that's always been there is visible in some shots, but in others, it has disappeared.
Chosen answer: We were never told. In the series finale [Spoiler alert] Number 6 demands an answer to that question, only to be shown his own reflection.
Jean G