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 Walter Koenig Ensign Pavel Chekov Actor Antoinette Bower Sylvia Guest Star Theodore Marcuse Korob Guest Star Michael Barrier DeSalle Guest Star John Winston Transporter chief Guest Star Jay D. Jones Crewman Jackson Guest Star Frank da Vinci Brent Guest Star Rhodie Cogan First witch Guest Star Gail Bonney Second witch Guest Star Mary Esther Denver Third witch Guest Star Gene Roddenberry Executive Producer Robert Bloch Writer Joseph Pevney Director