The City on the Edge of Forever producer Gene L. Coon
Production
Writing
The writing of this episode took over ten months, from the initial pitch by Harlan Ellison to the final re-write by Gene Roddenberry. Steven W. Carabatsos and D. C. Fontana, both story editors on the show, undertook re-writes of the teleplay, and changes have also been attributed to producer Gene L. Coon. The experience led to animosity between Ellison and Roddenberry for the rest of the latter's life, in particular over a claim by Roddenberry that Ellison had the character Scotty dealing drugs in one version of the script. The episode went over budget by more than $50,000 and overran the production schedule. Mistakes were made in the set design with an instruction for "runes" misconstrued as a request for "ruins". With Matt Jefferies ill, Rolland Brooks designed the set and the Guardian of Forever, to the surprise of Jefferies on his return.
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