The 40th episode of Gene Roddenberry’s science fiction series Star Trek premieres on NBC. Julie Newmar takes a break from the Batcave to guest star in an episode focusing on the prime directive (and Kirk’s typical willingness to break with that most sacred of Federation laws). 
Stardate 3497.2: The Enterprise rushes to an underdeveloped planet in an attempt to stop Klingon intervention in the somewhat primitive society. The Klingon Krag is trying to convince the planet’s people that an alliance with the Klingon Empire would be beneficial, and when Kirk breaks cultural taboos – not to mention the prime directive – by interfering with a “routine” killing and saving a pregnant woman, it becomes all too easy for Krag to point out that the landing party from the Enterprise have only come to usurp the planet’s ways of life.
written by D.C. Fontana
directed by Joseph Pevney
music by Gerald FriedCast: William Shatner (Captain James T. Kirk), Leonard Nimoy (Mr. Spock), DeForest Kelley (Dr. Leonard McCoy), James Doohan (Mr. Scott), George Takei (Lt. Sulu), Nichelle Nichols (Lt. Uhura), Julie Newmar (Eleen), Tige Andrews (Krag), Michael Dante (Maab), Cal Bolder (Keel), Ben Gage (Akaar), Kirk Raymone (Duur), Robert Bralver (Grant)
LogBook entry by Earl Green