Star Trek Saturday: Season 1; Episode 11 & 12: “The Menagerie”

Spock kidnaps his former commander Christopher Pike, locks the Enterprise on a course to the forbidden planet Talos IV, and turns himself in for court-martial.
Part 1
Part 2
Wikipedia notes:
“The Menagerie” is the only two-part episode of Star Trek: The Original Series. It is episodes #11 and 12, production #16. Part one of the episode was broadcast on November 17, 1966 with the second part broadcast a week later on November 24, 1966. NBC repeated the two shows on May 18 and 25, 1967. The episode’s screenplay was written by Gene Roddenberry. Since the true 1965 pilot episode “The Cage” was not shown on television until 1988 and The Original Series began with a second pilot “Where No Man Has Gone Before”, Desilu—the show’s production company—made a decision on what should be done with the wasted footage from the unused pilot movie.
Gene Roddenberry decided that in order to utilize “The Cage” footage, he would write an entirely new bookend story, so that “The Cage” would serve as a back story for the Starship Enterprise’s early history. New footage would be combined with the old and placed into the continuity of the overall Star Trek storyline.
“The Menagerie” won a Hugo Award for Best Dramatic Presentation.
“The Menagerie” solved two problems, by re-using the expensive footage from “The Cage”, and also a script crunch. The script was written by Gene Roddenberry, creator of the show, and also the writer of “The Cage”. The script for both parts of this episode is only 64 pages long, shorter than the scripts for some single episodes. Part I is 43 pages in length, while Part II runs to only 21 pages.
New filming took place for the framing story for “The Cage”. Since actor Jeffrey Hunter was unavailable to reprise his role as Captain Pike, a look-alike actor Sean Kenney played the injured captain in the new scenes, although Hunter was represented in the “Cage” flashback footage and credited accordingly (along with the original “Cage” cast).
Also in the new scenes, Malachi Throne (who provided the voice of the Keeper in the original “Cage”) portrayed Commodore Jose Mendez, while Julie Parrish played personal assistant Miss Piper. Because Throne played a second role in “The Menagerie”, the Keeper’s voice was re-recorded by another actor, Vic Perrin. The trailer for part two uses Throne’s original Keeper’s voice.
The framing story was directed by veteran Trek director Marc Daniels. Since the majority of his footage was used in Part I, he was given directing credit for this part. The director of The Cage, Robert Butler, was given credit for Part II, as the majority of that footage was from the original pilot.
In the scene on Rigel-7, Vina actually plays the slave girl painted in green makeup and dancing for Captain Pike. During pre-production makeup tests (using Majel Barrett as a stand-in), they sent the footage out for printing and when the film returned, the slave girl was Caucasian. The first time this happened, they re-shot the film with a darker green, and sent it out again for printing. The same thing happened again. It was discovered that the color lab had been correcting the slave girl’s skin tone to make her Caucasian.[1]
Footage from the master negative of “The Cage” was edited into the master negative of “The Menagerie”. No other color or 35 mm copy of “The Cage” existed, only a black and white 16 mm print owned by Gene Roddenberry. In 1987, the full-color negative “trims” from “The Cage” that had not been used in “The Menagerie” were discovered at a film laboratory in Los Angeles, and returned to Paramount Pictures.