Discover

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)
Art
Hal Pereira
Art Direction
Ray Moyer
Set Decoration

Sam Comer
Set Decoration
Albert Nozaki
Art Direction
Costume & Make-Up

Wally Westmore
Makeup Supervisor
Crew
Loyal Griggs
Cinematography
Editing
Jerry Webb
Editor
Writing
Alford Van Ronkel
Writer