Plot hole: The scientist yells for Igor to capture the escaping Castaways, to which Igor responds "capture them yourself" in Ginger's voice. The scientist appears surprised to find out Igor is not Igor, but how can this be? He had to be the one to pull the lever to switch everyone's personalities and bodies around, so he should have already known.
Revealing mistake: Near the end of the episode, all the castaways are passed out cold when Lord Beasley finally catches his butterfly. Right after saying the line "That's the trouble with you Americans - you simply don't know how to hold your tea" as he's exiting off camera, Mrs. Howell starts to open her eyes slightly, but then quickly shuts them again. Perhaps she thought the cameras stopped rolling.
Skipper Jonas Grumby: Ginger, I've got a problem... I've got a real problem... Now you're a girl, right?
Ginger Grant: Well, if you're not sure about that, you have got a problem.
Professor Roy Hinkley: Well, that glue is permanent! There's nothing on the island to dissolve it. Why do you know what it would take? It would take a polyester derivative of an organic hydroxide molecule.
Thurston Howell III: Watch your language! You're in the presence of a lady.
Eunice Wentworth "Lovey" Howell: Anyone who says money can't buy happiness doesn't know where to shop.
Question: In this episode, as the Professor is put into a trance, in the background, there seems to be a radio or television transmission tower that can be seen over the roof of the hut. It's blurry, but doesn't seem to be a standard palm tree. Is this a mistake, or set error, or my imagination?
Question: I'm very confused about the ending. During an interview, the interviewer says that the Navy are unable to find the castaways because Erika's log book is written in English translated from Hungarian. If her log book was translated from Hungarian to English, then how could the Navy be unable to use it to find the island and rescue everybody? She left out latitude and longitude but, there must have been something in the log book to give an idea of where the island was.
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