"What Are Little Girls Made Of?" was the 9th episode of Star Trek: The Original Series in the show's first season, aired on 20 October 1966. The episode was written by Robert Bloch, directed by James Goldstone and novelized in Star Trek 11 by James Blish.



Episode charactersEdit

Robert AbramsAndreaAaron BrownChristine ChapelJames T. KirkJames T. Kirk (android)Roger KorbyRyan LeslieEthan MatthewsEdward RayburnRukSpockNyota Uhuraunnamed 2260s USS Enterprise personnel
Referenced only 
Julius CaesarAsahf FerrisAdolf HitlerGenghis KhanGeorge Samuel Kirk, Jr.Bernard MaltuvisLouis Pasteur

Novelization charactersEdit

AndreaAaron BrownChristine ChapelJames T. KirkJames T. Kirk (android)Roger KorbyEthan MatthewsEdward RayburnRukSpockNyota Uhura
Referenced only 
George Samuel Kirk, Jr.

Starships and vehiclesEdit

USS Enterprise (Constitution-class heavy cruiser)


Referenced only 
Earth Colony IIEarthMidos VMilky Way GalaxyOrion

Races and culturesEdit

Referenced only 
Old Ones

States and organizationsEdit

Starfleet Academy

Other referencesEdit

500,000 years ago22612265android duplicatorarchaeological medicineautonomic nervous systembio-researchcaverncolonycommand packetcortex circuitgeishalogicsecurity officersecurity team


Related mediaEdit


Video releasesEdit


Episode imagesEdit

Adaptation imagesEdit


published order
Previous episode:
Balance of Terror
TOS episode produced Next episode:
Dagger of the Mind
Previous episode:
Mudd's Women
TOS episode aired Next episode:
Previous story:
first story in book
Star Trek 11
Next story:
The Squire of Gothos
chronological order
Previous Adventure:
The Edge of the Sword
Errand of Vengeance
Pocket Next Adventure:
Killing Blow
Errand of Vengeance
Previous Adventure:
The Edge of the Sword
Errand of Vengeance
Voyages of the
USS Enterprise (NCC-1701)
(2264 to 2270)
Next Adventure:
Killing Blow
Errand of Vengeance

External linkEdit

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