This is classic Star Trek! This episode stands out for: strong premise; enjoyable
relationship between Kirk and Deela; and that Kathie Browne is a total knockout!
I wonder if others have noticed a similarity between this series and Wild, Wild West? (1965-69). Both had good-looking leading men, and often had a beautiful woman who was a romantic interest for the hero. I imagine that for an actress in the 1960's, it was especially fun to be cast as one of these sci-fi women guest stars of Star Trek. Partly because the costumes were colorful, memorable and often very sexy! For a number of actresses, that was the one role for which they are most remembered--those were really showcase roles. Kathie Browne was one of the great beauties on the show, and also one of the best actresses.
Here's the plot problem: Why, for heaven's sake, did Kirk not offer the Scalosians the antidote that he and Spock took? Would it not have worked because they would still be on the planet, drinking the water? Or would it be interference with their almost-extinct society? I would have offered them the antidote!
Review of Wink of an Eye
