Continuity mistake: The characters all refer to Williams's station as Dunsley Tracker, but in a close-up of the console, the caption above the alert light reads 'Densley Tracker'.
Continuity mistake: When Scott and Virgil contact Tracy Island and their reports are affected by a bad interference, Jeff is wearing his glasses, but later on in the scene they disappear.
Move - And You're Dead - S1-E20
Continuity mistake: When Alan contacts his father at Tracy Island, Jeff asks him "How's the situation, boy?" Alan informs him that Grandma has passed out in the heat and Alan's face is covered in sweat. But after a quick cut to Jeff saying "Passed out?" we return to Alan, and the sweat on his face has disappeared.
Move - And You're Dead - S1-E20
Continuity mistake: As Alan makes his telecall to Grandma, the close-up of his hand dialing her number shows the push-button dial panel with letters on the left and numbers on the right, but on the puppet-sized telecall unit, the numbers are on the left and the letters are on the right.
Move - And You're Dead - S1-E20
Deliberate mistake: Throughout Thunderbirds, when the script required objects to be manipulated, there were cutways to close up 'insert' shots of real human hands - usually of the puppeteers/crew. However in this episode, Alan's close-up (i.e. live action) hand is remarkably hairy with very dark hair. Yet Alan Tracey is supposed to be 21 and blond haired (including the hair on the back of his hands).
Move - And You're Dead - S1-E20
Continuity mistake: When Jeff Tracey is first contacted by Alan, he is sat behind his desk, but when the picture cuts back to him after a quick shot of Alan, he is suddenly perched on the front of the desk reading a magazine.
Move - And You're Dead - S1-E20
Continuity mistake: When we first see Alan in his racing car, a close-up shot shows the steering wheel on the left-hand side. However, the miniature model used for the distance shots shows the steering wheel on the right.
Move - And You're Dead - S1-E20
Continuity mistake: In a close-up of Victor Gomez' racing car, he has a very large number 7 behind the driver's position. But the miniature model used for the distant shot has only a small white number 7 on the door.
Move - And You're Dead - S1-E20
Continuity mistake: When we first see Virgil in the cockpit of Thunderbird 2 in the launch sequence at Tracy Island, he has nothing on his head. Later on, when we see both him and Brains, Virgil is now wearing his International Rescue hat, but when we see Virgil after the launch, the hat has gone.
Move - And You're Dead - S1-E20
Continuity mistake: The shot of Brains' lab inside Thunderbird 2 shows a window, yet apart from the cockpit, there are no other windows on the exterior of TB2.
Move - And You're Dead - S1-E20
Continuity mistake: When Thunderbird 1 is pursuing Gillespie and Gomez towards the end of the episode, Gillespie and Gomez both have their hands on the steering wheel in the car in one shot, yet the view from Thunderbird 1 shows only Gomez driving the car.
Move - And You're Dead - S1-E20
Continuity mistake: During the race, the driver's door on Alan's car changes from mud-splattered to clean between shots.
Move - And You're Dead - S1-E20
Continuity mistake: When Thunderbird 2 touches down on the sand to release Alan in his car, there is no "2" underneath its front section, but the number reappears when the pod is being released.
The Duchess Assignment - S1-E21
Continuity mistake: After the Duchess has been rescued by "those romantic young men from International Rescue," when the Duchess removes the canvas from her umbrella, in the closeup (with human hands) she's wearing a pink button-down, but in all other shots there are no buttons whatsoever. (00:45:20)
The Duchess Assignment - S1-E21
Other mistake: When the WAT Wombat lands on the runway, the jetex attached to the underside can be seen falling off.
The Duchess Assignment - S1-E21
Continuity mistake: The pod chosen for Thunderbird 2 in order to rescue the Duchess from the burning house is Pod 3, but if you look carefully when the Mole is coming out of the pod, you can see "Thunderbird 2 Pod 4".
The Duchess Assignment - S1-E21
Audio problem: In the opening scene at the casino, the rogue croupier at the Duchess' table is voiced by Matt Zimmerman, but when the same croupier calls out "18 red", he has a completely different voice provided by Peter Dyneley.
The Duchess Assignment - S1-E21
Character mistake: When the croupier at the Duchess' table calls out the phrase "Rien ne va plus" (French for "no more bets"), he pronounces "Rien" incorrectly - he pronounces it "RINE ne va plus" instead of "REE-en ne va plus".
Continuity mistake: The broken section of monorail track that is attached to the top of the centre coach when Thunderbird 2 lifts it away from the bridge is significantly longer when Virgil sets the coach down on the mountainside.
Other mistake: Just as the villains' car goes out of control in the opening sequence, a huge lump of greenery falls out of the sky in the background.
