Credits
Cast
Roland Winters
Charlie Chan
Wanda McKay
Evelyn Manning
Mantan Moreland
Birmingham Brown
Victor Sen Yung
Tommy Chan (as Victor Sen Young)
Bruce Kellogg
Talbot Bartlett
Tim Ryan
Vincent O'Brien / Lt. Mike Ruark
Evelyn Brent
Sister Teresa
Ralph Dunn
Jim. Driscoll
Lois Austin
Mrs. Margaret Driscoll
Forrest Taylor
Mr. Manning
Lee 'Lasses' White
Pete
Arthur Berkeley
Townsman (uncredited)
Edmund Cobb
Miner (uncredited)
Geraldine Cobb
Girl in Riding Clothes (uncredited)
Babs Cox
Bathing Girl (uncredited)
Sam Flint
Dr. Groves (uncredited)
Lee Tong Foo
Wong Fai (uncredited)
Michael Gaddis
Pursuer (uncredited)
Jack Gargan
Man in the Darkness (voice) (uncredited)
Mary Ann Hawkins
Bathing Girl (uncredited)
Shep Houghton
Dude Ranch Guest (uncredited)
John Merton
Miner (uncredited)
Suzanne Ridgway
Dude Ranch Guest (uncredited)
Martin Strader
Henchman (uncredited)
Art
Dave Milton
Art Direction
Raymond Boltz Jr.
Set Decoration
Camera
John J. Martin
Camera Operator
William A. Sickner
Director of Photography
Grant Tucker
Grip
Costume & Make-Up
Lela Chambers
Hairstylist
Web Overlander
Makeup Artist
Directing
William Beaudine
Director
Jules V. Levy
Script Supervisor
Editing
Ace Herman
Editor
Otho Lovering
Supervising Editor
Production
James S. Burkett
Producer
Allen K. Wood
Production Manager
Sound
John K. Kean
Sound
Franklin Hansen
Sound
Writing
Earl Derr Biggers
Characters
Scott Darling
Writer