Guest Stars Lee Meriwether as Dr. Ann MacGregor John Zaremba as Dr. Raymond Swain Whit Bissell as Lt. General Heywood Kirk John Hoyt as Alien Leader Ross Elliott as Sheriff Fred Beir as Taureg Tristram Coffin as Jess Crawford Jan Merlin as Centauri Byron Foulger as Williams Gary Haynes as Deputy Sam Colt
