On screen
Cast
18 credited performers
Lloyd Bridges
Colonel Floyd Graham
Artwork unavailable
Osa Massen
Dr. Lisa Van Horn
John Emery
Dr. Karl Eckstrom
Noah Beery Jr.
Major William Corrigan
Hugh O'Brian
Harry Chamberlain
Morris Ankrum
Dr. Ralph Fleming
Patrick Aherne
Reporter #1
Sherry Moreland
Martian girl
Artwork unavailable
John Dutra
Physician
Kathy Marlowe
Reporter
Artwork unavailable
Tom Coleman
Reporter (uncredited)
Artwork unavailable
James Conaty
Doctor Taking Lisa's Blood Pressure (uncredited)
Artwork unavailable
Sam Harris
Reporter at Press Briefing (uncredited)
Judd Holdren
Reporter #3 (uncredited)
Stuart Holmes
Reporter (uncredited)
Barry Norton
Reporter (uncredited)
Cosmo Sardo
Reporter (uncredited)
Artwork unavailable
Bert Stevens
Reporter (uncredited)