“The Deadly Years” ****
The landing party contracts a disease similar to rapid aging.
On the face of it it would seem easy to dismiss this episode. These days it's easy to make light of "disease of the week" stories in science fiction television. But back when
Star Trek was new it hadn't yet become a familiar routine. Yes, we'd already seen deadly ailments in TOS previously in "The Naked Time" and "Miri," but the story idea hadn't worn out its welcome yet.
What makes this work for me are the performances as members of the landing party slowly fall physically and mentally apart. It isn't enough that they display difficulty in physical movement and the requisite appearance of advanced aging, and also diminishing mental ability, but they also display the crankiness of advanced age as some people fight accepting their deterioration. They can get into a state of denial that they're just not what they used to be. Shatner nails this aspect of aging with his stubbornness, moodiness and even a touch a vanity. Candidly I found watching our heroes fall apart rather moving. It was rather sad and I certainly don't mean that in the pathetic sense. And this was done through a lot of little things and small moments.
I also liked the detail of having the cast wearing slightly larger uniforms to suggest their diminishing physiques.
Although he had the regulations on his side Commodore Stocker really was an idiot. I'd wager that there were at least two people aboard who could have taken commend in place of Kirk, Spock or Scotty: Sulu or Assistant Chief Engineer DeSalle. They certainly would have been a lot safer bet and smarter than Stocker.
Although Kirk mightn't make an issue of it I can well imagine Starfleet brass having an issue with Stocker once they got hold of the reports of what happened after Stocker took command. He not only endangered a valuable frontline starship and its crew, but he could have set off an interstellar war.
Another interesting turn of events is that this time it's the woman who is putting the moves on Kirk, or at least dropping the hints and giving him the "come hither" looks.