Harry Townes
Jim Benedict
John Agar
Col. Matthews
Whitney Blake
June
Cecil Kellaway
Dr. A.A. Andrews
Charles Aidman
Dave
Gail Kobe
Kim
Edward Platt
Dr. Easton (as Edward C. Platt)
William Traylor
Space Ship Crew
John Clarke
Space Ship Crew
Joel Lawrence
Space Ship Crew
Jon Lormer
Prof. Logan
Robert Cornthwaite
Sen. Royce
Sam Edwards
Technician (uncredited)
Frank Gerstle
Member of Senate Investigating Committee (uncredited)
Biff McGuire
Technician (uncredited)
Ed Prentiss
Mr. Duffy (uncredited)
Bert Remsen
Technician (uncredited)
Joseph Pevney
Director
Jerry Webb
Editor
Lyle Figland
Sound
Loyal Griggs
Cinematography
Richard Caffey
Assistant Director
James A. Schulke
Supervising Producer
Van Cleave
Music
Sam Comer
Set Decoration
Hal Pereira
Art Direction
Alford Van Ronkel
Writer
Alford Van Ronkel
Producer
Ray Moyer
Set Decoration
Winston H. Leverett
Sound
Albert Nozaki
Art Direction
Wally Westmore
Makeup Supervisor