"The Menagerie Part I" takes us where only one starship has gone before, to the incredible experience of Captain Christopher Pike on the forbidden planet Talos IV. The story starts at Starbase 11 as Kirk takes Enterprise off its patrol to respond to a message Spock claims to have received from Pike. The base sent no message according to its commander, Commodore Mendez, indeed Captain Pike has been rendered incapable by an accident confining him to his iconic wheelchair with its famously blinking light. Before Kirk can solve the mystery however Spock kidnaps Pike and commandeers Enterprise to Talos IV, deliberately inviting "the only death penalty left on the books."

Spock makes it clear ("You know why I've come") that both he and Pike have been in contact with the Talosians for some time. His plan almost succeeds, at least until Kirk outthinks his First Officer, daring him to abandon the depleted, pursuing shuttlecraft. Kirk and Mendez immediately begin court martial proceedings with Pike as the deciding vote. In response to the Commodore's questions Spock introduces images (later learned to be from Talos) depicting the events surrounding Enterprise's first visit there thirteen years prior, tricked by the fantastic power of illusion the Talosians wield. Pike is captured with the crew helpless to rescue him.

Jeffrey Hunter delivers an outstanding performance as Captain Pike, an intriguing look at a Star Trek that might otherwise have been. The beautiful Susan Oliver provides Vina with smoldering sex appeal. Peter Duryea is memorable as navigator Tyler as is the great character actor John Hoyt as Dr. (or bartender!) Phil Boyce. And don't forget Meg Wylie as the creepy Keeper! The regulars are in excellent shape also though not always where we expect to find them! Majel Barrett delivers an exceptional performance as the icy Number One. In the "present" Malachi Throne does a fine job as Commodore Mendez. McCoy and to a lesser degree, Uhura and her shocked reactions, also get considerable screentime.

The abduction of Captain Pike from Starbase Eleven excels as an example of what a motivated Vulcan can do. It's not only that Spock planned the ruse down to anticipating Kirk's replies, he can also manhandle an unfortunate Starfleet technician at the same time! He locks out ship's controls beyond an exasperated Scott's ability to restore, and by his actions belies both Kirk and McCoy's idealistic opinion of Vulcan behavior. When Mendez challenges him near the end of the episode, "I respectfully decline" expresses the terse commitment of logically determined obstinacy.