Plot hole: Everyone is suddenly afflicted with a bizarre form of amnesia in this episode. The entire time Solo & Illya are guarding the Russian chairman, they're dealing with language and cultural barriers that shouldn't be there - because no one, including Illya himself, seems to remember the fact that Illya is also Russian. (00:48:50)Jean G
Revealing mistake: Miss Moonglow's lipstick supposedly glows in the dark. But when the lights go out, a badly superimposed special effect causes the glowing lips to remain completely stationary, even when she doesn't. Her head moves, but weirdly, the lips don't. (00:36:20)Jean G
Other mistake: In the last scene of the episode, the opening shot is a Boeing 707 in flight. The 707 logo on the tail is backwards. It appears they flipped over a piece of film stock from a shot earlier in the episode, where the same plane was flying in the opposite direction.
Continuity mistake: Could this be the affair of the flying saucer and teacup? As Napoleon Solo is having tea with Miss Partridge, he has his teacup in his right hand with the saucer on the table. Mysteriously, in the next shot, the saucer suddenly appears in his left hand, only to find its way back to the table again. Then both teacup and saucer appear in Solo's left hand. Then both find their way back to the table, then back into his left hand again. And it all happens in a span of about 30 seconds. (00:06:50 - 00:07:25)
Continuity mistake: Jojo shoots Illya, who falls into a pile of garbage cans, overturning a large cardboard box full of paper. When the camera angle changes, the box has not only moved a few feet to one side all by itself, it has also set itself upright again. (00:20:45)Jean G