Star Trek: The Conscience of the King

"The Conscience of the King" is the thirteenth aired episode of season one of the American science fiction television series Star Trek, but the twelvth official episode of the series discounting the original unaired pilot episode. It was directed by Gerd Oswald and written by Barry Trivers. It first aired on NBC on December 8th, 1966. Like all episodes from the series, "The Conscience of the King" was digitally remastered with new footage. The remastered version of the episode aired on CBS on September 22nd, 2007. In this episode, Captain Kirk's chilldhood friend, Doctor Thomas Leighton brings a man named Anton Karidian aboard the Enterprise under the pretense that he is a trained Shakespearean actor. Before long however, the crew begins to suspect that Karidian may actually be a mass murderer known as Kodos the Executioner who was responsible for a massacre some twenty years ago.