On the Threshold of Space

Guy Madison as Capt. Jim Hollenbeck Dean Jagger as Dr. Hugo Thornton Martin Milner as Lt. Mort Glenn King Calder as Lee Welch Walter Coy as Lt. Col. Dick Masters Ken Clark as Sgt. Ike Forbes Virginia Leith as Pat Lange John Hodiak as Maj. Ward Thomas Warren Stevens as Capt. Mike Bentley

Barbara McLean Associate Producer