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What Are Little Girls Made Of? 

Nurse Chapel is reunited with her fiancé; but his new obsession leads him to make an android duplicate of Captain Kirk.


James Goldstone


Robert Bloch, Gene Roddenberry (created by)




Episode complete credited cast:
William Shatner ... Capt. Kirk
Leonard Nimoy ... Mr. Spock
Michael Strong ... Dr. Roger Korby
Sherry Jackson ... Andrea
Ted Cassidy ... Ruk
Majel Barrett ... Christine Chapel
Nichelle Nichols ... Uhura
Harry Basch ... Brown
Vince Deadrick Sr. Vince Deadrick Sr. ... Mathews (as Vince Deadrick)
Budd Albright Budd Albright ... Rayburn


The crew of the Enterprise arrive at the planet EXO-III with some trepidation and great anticipation. They are there to see if hey can locate the renowned scientist Dr. Roger Korby. The man hasn't been heard of for 5 years and the general belief is that he is dead. For Nurse Christine Chapel however, a reunion with Corby will be a reunion with her fiancé. They find Korby alive but when Kirk and Chapel beam down to the planet, they find a man obsessed who is using alien technology to reproduce the humans around him in the form of androids. Written by garykmcd

Plot Summary | Plot Synopsis


TV-PG | See all certifications »

Did You Know?


James Goldstone, who directed the second pilot, Star Trek: The Original Series: Where No Man Has Gone Before (1966) was hired to direct this episode, because the production staff greatly praised his work. However, filming of this episode went two days over schedule (mostly due to the aforementioned script problems), resulting in eight shooting days. Goldstone was never re-hired. See more »


When Kirk and Chapel first beam down to the surface, they are standing apart on the pads in the transporter room. When they materialize, they are right next to each other, nearly touching. See more »


Kirk Android: Mind your own business, Mr. Spock, I'm sick of your half-breed interference. Do you hear?
Mr. Spock: Yes, very well, Captain.
Kirk Android: You look upset, Mr. Spock. Is everything all right up here?
Mr. Spock: No problems here, sir.
See more »

Alternate Versions

Special Enhanced version Digitally Remastered with new exterior shots and remade opening theme song See more »


Theme From Star Trek
Written by Alexander Courage
See more »

User Reviews

Lurch Goes Bersurch!
25 April 2014 | by HitchcocSee all my reviews

This is a pretty good episode. Nurse Chapel (Majel Barrett, the one time Mrs. Gene Roddenberry) is really a peripheral character in most episodes. Her she has a chance to star. The one consistent factor here is that Christine really loves Spock. It shows up in succeeding episodes and, of course, it's a hopeless dream for her. In this she has joined an away team to a planet where a former lover of hers has been for over five years. When she gets there, all hell breaks loose. First of all, the guy has two of Kirk's crew killed by the gruesome Ted Cassidy, formerly of "The Addams Family." It turns out that the boyfriend has been working on building a herd of androids to take over the universe. It has one of the great scenes where Kirk, realizing he is about to be cloned, repeats a series of words over and over, telling Spock, "I'm tired of your half-breed interference!" What happens depends on the perceptions of the crew and an understanding of who is who. It has a sad conclusion for all concerned but particular for Nurse Chapel. It's a pretty tight little episode with some especially neat settings.

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Greek | English

Release Date:

20 October 1966 (USA) See more »

Also Known As:

What Are Little Girls Made Of? See more »

Company Credits

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Technical Specs


Sound Mix:

Mono | Dolby Digital (re-mastered version)| DTS (re-mastered version)


Color | Color (Technicolor)

Aspect Ratio:

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