Guest Stars Susan Oliver as Vina Co Starring Leonard Nimoy as Mr. Spock Majel Barrett Roddenberry as Number One John Hoyt as Dr. Philip Boyce Peter Duryea as Lt. Jose Tyler Laurel Goodwin as Yeoman J. M. Colt Uncredited Meg Wyllie as The Keeper Jon Lormer as Dr. Theodore Haskings Robert Phillips as Space Officer (Orion) Bob Johnson voices First Talosian Grace Lee Whitney as Illusion Princess Leonard Mudie as Survivor