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 Michael Ansara as Kang Co Starring Susan Howard as Mara Mark Tobin as Klingon David L. Ross as Lt. Johnson Uncredited Eddie Hice as Security Guard Phil Adams as Klingon Soldier Charles Picerni as Klingon
