Currently available on 2 streaming services.

Doomsday Machine (1972)

2.6 (1.4k)
1h 23min
JustWatchTV
Free stream
Doomsday Machine

Doomsday Machine - watch online: streaming, buy or rent

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Cast

Bobby Van
Danny
Ruta Lee
Dr. Marion Turner
Mala Powers
Maj. Georgianna Bronski
James Craig
Dr. Haines
Grant Williams
Maj. Kurt Mason
Henry Wilcoxon
Dr. Christopher Perry
Essie Lin Chia
Girl Spy
Casey Kasem
Mission Control Officer
Lorri Scott
Lt. Katie Carlson
Denny Miller
Col. Don Price
Mike Farrell
1st Reporter
Mark Bailey
Major / Astronaut
Mary Meade
Woman Reporter
Raymond Mayo
Michael Christian