Guest Stars James Doohan as Lt. Cmdr. Montgomery "Scotty" Scott Nichelle Nichols as Lt. Nyota Uhura George Takei as Lt. Hikaru Sulu Walter Koenig as Ensign Pavel Chekov Majel Barrett Roddenberry as Nurse Christine Chapel Co Starring Pamelyn Ferdin as Mary Craig Huxley as Tommy Starnes Brian Tochi as Ray Louie Elias as 1st Technician James Wellman as Professor Starnes Melvin Belli as Gorgan Caesar Belli as Steve Mark Robert Brown as Don
