Cast
Boris Karloff
James Lee Wong
Marjorie Reynolds
Roberta 'Bobbie' Logan
Grant Withers
Capt. William Street
William Stelling
Dick Fleming
Catherine Craig
Cynthia Wentworth
Guy Usher
Paul Fleming
Henry Brandon
Attorney Victor Martin
Melvin Lang
Cyrus B. Wentworth
Wilbur Mack
Matthews
Kenneth Harlan
Ludlow
Richard Loo
Tong Leader
Tristram Coffin
Mr. Baldwin - Adjuster (uncredited)
Gibson Gowland
Doctor (uncredited)
Jack Kennedy
Police Sgt. Casey (uncredited)
Mike Donovan
Det. Mike
Maxine Leslie
Miss Reed - Secretary
Moy Ming
(1863–1964)
Aged Tong Member
Angelo Rossitto
Newsboy #3 in Montage
Directing
William Nigh
Director
Glenn Cook
Assistant Director
Writing
Michael Jacoby
Screenplay
Ralph Gilbert Bettison
Story
Hugh Wiley
Characters
Camera
Harry Neumann
Director of Photography
Production
Paul Malvern
Producer
Charles J. Bigelow
Production Manager
Costume & Make-Up
Gordon Bau
Makeup Artist
Editing
Robert Golden
Editor
Sound
Karl Zint
Sound Recordist
Edward J. Kay
Music