William Shatner Capt. James T. Kirk Actor Leonard Nimoy Mr. Spock Actor DeForest Kelley Dr. Leonard McCoy Actor James Doohan Engineer Montgomery Scott Actor Nichelle Nichols Lt. Uhura Actor George Takei Lt. Sulu Actor Ed McCready Inmate Guest Star James Gregory Tristan Adams Guest Star Morgan Woodward Simon Van Gelder Guest Star Marianna Hill Helen Noel Guest Star Susanne Wasson Lethe Guest Star John Arndt First Crewman Guest Star Larry Anthony Transportation man Guest Star Eliezer Behar Therapist Guest Star Walt Davis Therapist Guest Star Louie Elias Therapist Guest Star Gene Roddenberry Executive Producer Shimon Wincelberg Writer Vincent McEveety Director