Character Name : Jim Benedict

Original Name : Harry Townes

Gender : Male

Character Name : Col. Matthews

Original Name : John Agar

Gender : Male

Character Name : June

Original Name : Whitney Blake

Gender : Female

Character Name : Dr. A.A. Andrews

Original Name : Cecil Kellaway

Gender : Male

Character Name : Dave

Original Name : Charles Aidman

Gender : Male

Character Name : Kim

Original Name : Gail Kobe

Gender : Female

Character Name : Dr. Easton (as Edward C. Platt)

Original Name : Edward Platt

Gender : Male

Character Name : Space Ship Crew

Original Name : William Traylor

Gender : Male

Character Name : Space Ship Crew

Original Name : John Clarke

Gender : Male

Character Name : Space Ship Crew

Original Name : Joel Lawrence

Gender : Male

Character Name : Prof. Logan

Original Name : Jon Lormer

Gender : Male

Character Name : Sen. Royce

Original Name : Robert Cornthwaite

Gender : Male

Character Name : Technician (uncredited)

Original Name : Sam Edwards

Gender : Male

Character Name : Member of Senate Investigating Committee (uncredited)

Original Name : Frank Gerstle

Gender : Male

Character Name : Technician (uncredited)

Original Name : Biff McGuire

Gender : Male

Character Name : Mr. Duffy (uncredited)

Original Name : Ed Prentiss

Gender : Male

Character Name : Technician (uncredited)

Original Name : Bert Remsen

Gender : Male