Keye Luke
James Lee Wong
Lotus Long
Win Lee, Benton's Secretary
Grant Withers
Police Captain Street
Charles Miller
Dr. John Benton / Cyrus Benton in Newspaper (as Charles Miller)
Huntley Gordon
Dr. Norman Wilkes
Virginia Carpenter
Louise Benton
John Dilson
Charlie Frasier
Paul McVey
Detective Grady
John Holland
Mason
Richard Terry
Toreno
Robert Kellard
Tommy Dean
Willy Castello
Jonas
Lee Tung Foo
Foo
Lynton Brent
Radio News Broadcaster
