Cast & Crew
-
Lloyd BridgesCol. Floyd Graham - Osa MassenDr. Lisa Van Horn
- Hugh O'BrianHarry Chamberlain/Voice on loudspeaker
- John EmeryDr. Karl Eckstrom
- Noah Beery Jr.Maj. William Corrigan
- Morris AnkrumDr. Ralph Fleming
- Patrick AherneReporter 1
- Kathryn MarloweReporter
- Sherry MorelandMartian Girl
- Judd HoldrenReporter 3
- Kurt NeumannDirector
- Robert L. LippertProducer
- Dalton TrumboWriter
- Kurt NeumannWriter