Star Trek: Once Upon a Planet

"Once Upon a Planet" is the ninth episode of season one of Star Trek: The Animated Series and is the 89th episode released of all programs combined. The episode was directed by Hal Sutherland with a teleplay written by Chuck Menville and Len Janson]]. The series was produced by Norm Prescott and Lou Scheimer of Filmation Associates with Star Trek regular D.C. Fontana serving as associate producer. The episode stars original cast members William Shatner, Leonard Nimoy and DeForest Kelley reprising their classic roles as Captain Kirk, Mister Spock and Bones. It first aired on NBC on November 3rd, 1973.