Elenco
Morris Ankrum
Lt. Pat McKay
Paul Guilfoyle
Dudley Badger
William Tannen
McKay's Assistant (uncredited)
Jacqueline White
Jean Smith (uncredited)
Henry O'Neill
Dr. Everett Colner
Arthur Space
Burton Caighn Jr.
Dorothy Adams
Mrs. Mary Abbott (uncredited)
Paul Langton
Peter Selkin (uncredited)
John Vosper
Dr. Elton Parkson (uncredited)