Star Trek: The Return of the Archons

"The Return of Archons" is the twenty-first episode of season one of the original science fiction/adventure series Star Trek, and is the twenty-first episode produced in the series overall. It was directed by Marc Daniels with a teleplay written by Don M. Mankiewicz and Steven W. Carabatsos based on a story treatment by Mankiewicz. It first aired on NBC on February 9th, 1967.