Here's a Star Trek rarity. An episode without Captain Kirk (William Shatner).
No, this time around, Mr. Spock (Leonard Nimoy) takes point (and narrates) in the episode, "The Slaver Weapon". Acclaimed science fiction author Larry Niven adapted his own original story for television.
Scope the trailer:
This was the only time in 5 seasons (3 live-action, 2 animated) that Kirk was not in the story. Amazing, isn't it?
I believe Leonard Nimoy was still working on another Paramount series, Mission: Impossible, while reprising as Spock. Have to check and verify.
Regrettably, the poster didn't include opening & closing credits. Oh, well, can't have everything.