Calificación
Reparto

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)