Top Cast
Gerald Mohr
Col. Thomas O`Bannion
Naura Hayden
Dr. Iris Ryan
Les Tremayne
Prof. Theodore Gettell
Jack Kruschen
CWO Sam Jacobs
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Paul Hahn
Maj. Gen. George Treeger
J. Edward McKinley
Prof. Paul Weiner
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Tom Daly
Dr. Frank Gordon
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Don Lamond
TV Newscaster / Narrator / Martian (voice)
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Edward Innes
Brig. Gen. Alan Prescott
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Gordon Barnes
Maj. Lyman Ross
