Star Trek (1966–1969)
24 user 7 critic

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)

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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 »






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:




Aspect Ratio:

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Did You Know?


The graphic of Exo III shown on Spock's screen is seen again in the USS Defiant's sickbay in Star Trek: The Tholian Web (1968). See more »


One close-up of Kirk during his last conversation with Ruk is flipped. Notice that his hair is parted the opposite way and the colors of the costume are reversed. See more »


Dr. Roger Korby: You might as well try to outthink a calculating machine.
Captain James T. Kirk: Obviously I can't.
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Crazy Credits

On the closing credits plate which lists 'co-starring' roles, two names are listed... Sherry Jackson and Ted Cassidy. But the names are printed in such a way that it appears three actors are credited: Sherry, Jackson, and Ted Cassidy. See more »

Alternate Versions

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


Edited from Star Trek: The Man Trap (1966) See more »


Theme From Star Trek
Written by Alexander Courage
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User Reviews

Strong plot and with a shocking ending
2 September 2007 | by fabian5See all my reviews

This is an early Star Trek season one episode made when Captain Kirk, Spock, Uhura, Scotty, Sulu and Nurse Chapel were members of the standard Star Trek crew that we all recognize today. Basically, Nurse Chapel--Dr. Roger Korby's old flame--together with Captain Kirk beam down to an isolated planet for what they imagine is a friendly get together with the doctor. Unfortunately...for Kirk, Dr. Korby has other ideas and forces Kirk to make a clone of himself in order to seize control of the Enterprise. This is a memorable episode with a compelling and powerful ending when you discover who Dr. Korby really is. Its a remarkable show when you consider that Sulu and Scotty were did not appear in this episode and has to be considered a Star Trek classic.

The episode does indeed have an extremely well written script and several emotional scenes such as when Nurse Chapel get a kiss from Uhura before beaming down to see her long-lost fiancée and Dr. Korby's haunting words to Chapel when she discovers Korby's true identity.

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