The Cat with Ten Lives - S1-E3
Deliberate mistake: When MoonBase Interceptor pilots put their helmets on before launch, the mics are on the left side of their helmets, but when they're space borne to intercept UFOs at least one pilot closeup is a flipped shot. Then, after Lake says, "They're wide open now, where are they," the interior closeup of a cockpit is also flipped; note "GYRO" is reversed. (00:02:25 - 00:04:55)
The Cat with Ten Lives - S1-E3
Visible crew/equipment: When Regan arrives on Earth for his 48-hour leave, at the security checkpoint he shouts, "Morgan, get out here," and as the camera tracks left we can see the reflection of the camera operator and camera dolly. (00:10:20)
The Cat with Ten Lives - S1-E3
Continuity mistake: At Murial and Albert's, when the ouija alphabet cards are placed on the table, the "YES" card alternates being between the "G" and "H" cards or the "H" and "I" cards, depending on the camera angle. Other cards change direction/position as well. (00:13:40)
The Cat with Ten Lives - S1-E3
Revealing mistake: Jim awakens alone in his car with the Siamese cat, and when he rushes out shouting for Jean, there are two black rods under the car's doors. But as soon as Jim gets back into his car, the rods vanish between shots. (00:21:55)
The Cat with Ten Lives - S1-E3
Continuity mistake: When Ayshea finds the Siamese cat wandering around SHADO Control, in the close-up of Ayshea petting the cat, her fingernails are short; but otherwise, Ayshea has long fingernails. (00:29:45)
The Cat with Ten Lives - S1-E3
Revealing mistake: Jim Regan waits inside Paul's car, then attacks him. When they exit the car, the door is up without a rod. But when they stand beside the car, there's a black rod holding the door up. (00:37:40)
The Cat with Ten Lives - S1-E3
Continuity mistake: Right after the "Immediate launch" on MoonBase, when it cuts to Miss Holland, she's walking from her office into Straker's office. The cat runs away from Holland, and in the cat's close-up, it exits Straker's office. However, this doorway is not leading to Miss Holland's office in this close-up. (00:41:20)