Doctor X
A wisecracking New York reporter intrudes on a research scientist's quest to unmask The Moon Killer.
Dr. Jerry Xavier
Joanne Xavier
Lee Taylor
Dr. Wells
Dr. Haines
Dr. Duke
Dr. Rowitz
Mamie
Commissioner Stevens
Otto, Dr. Xavier's Butler
Detective O'Halloran
Daily World Editor
Mike, Waterfront Policeman
Cathouse Madame
Sheriff
Morgue Detective (Uncredited)
Willard Keefe, Daily World Night Editor (Uncredited)
Detective at Headquarters (Uncredited)
Louise (Uncredited)
