Synopsis
Beaming down to a planet to search for the crew of the missing ship Ariel, the U.S.S. Enterprise crew is captured by a race of super intelligent slug creatures and become part of a zoo collection.

Voice Credits:

Regular Characters:

Captain Kirk	William Shatner
Mr. Spock	Leonard Nimoy
Dr. McCoy	DeForest Kelley
Scotty	James Doohan
Lieutenent Sulu	George Takei
Lieutenent Arex	James Doohan
Lieutenent M'Ress	Majel Barrett

Guest Characters:

Lt Cdr Tom Markel	James Doohan
Randi Bryce	Majel Barrett

Pictures:

• Medium Sized Picture (47KB jpeg)
  
• Picture 1 (33KB jpeg)
  
• Picture 2 (33KB jpeg)
  
• Picture 3 (33KB jpeg)
  
• Picture 4 (33KB jpeg)
  
• Picture 5 (33KB jpeg)
  
• Picture 6 (33KB jpeg)
  
• Picture 7 (33KB jpeg)
  
• Picture 8 (33KB jpeg)
  
• Picture 9 (33KB jpeg)
  

Notes:

• This episode's author, David P. Harmon also wrote the original STAR TREK episodes "The Deadly Years" and "A Piece of the Action."
• This episode had a visual error: in a close-up Spock had normal eyebrows. (Picture showing this error, 32KB jpeg).
• The aliens in "The Eye of the Beholder" would have been impossible to do in a live action series.
• Another small error in the episode: Lieutenant Commander Tom Markel was shown with Commander stripes.
• In this episode, a purple flying lizard-like creature menaced members of an Enterprise landing party. The animated sequence made use of drawings originally created for the flying plant creatures that menaced the Enterprise landing party in "The Infinite Vulcan". Another example of similar life forms evolving on different planets.
• There was a seventh season STAR TREK: The Next Generation episode "Eye of the Beholder", and also a classic Twilight Zone episode by that name.
• There also was a STAR TREK novel by A. C. Crispin entitled "The Eyes of the Beholders" published by Pocket Books in September 1990, but it is an entirely different story.
• Another visual error: the crew of the U.S.S. Ariel wore the insignia of the Enterprise. (Bjo Trimble's 1976 Concordance conjectured that the insignia of the Ariel was an elongated and more angular arrowhead design than the Enterprise insignia.)
• A VHS video tape containing "The Eye of the Beholder" and "Once Upon a Planet" is available for purchase from amazon.com, the online bookseller.
• "The Eye of the Beholder" was novelized by Alan Dean Foster in Star Trek Log Eight published by Ballantine Books in August 1976. The entire book was devoted to this one episode.