Guest Stars DeForest Kelley as Dr. Leonard Horatio "Bones" McCoy Nichelle Nichols as Lt. Nyota Uhura Grace Lee Whitney as Yeoman Janice Rand Robert Walker, Jr. as Charles "Charlie" Evans Co Starring Charles Stewart as Captain Ramart Abraham Sofaer as The Thasian Don Eitner as Navigator John Bellah as Crewman I Garland Thompson as Crewman II Dallas Mitchell as Nellis Patricia McNulty as Tina Lawton