Cast
Leonard Mudie
Horace Karloss, Horace Karlos (uncredited)
Emmett Vogan
Mr. Hamilton
Sidney Toler
Charlie Chan
Benson Fong
Tommy Chan
Mantan Moreland
Birmingham Brown, Chauffeur
Jack Norton
Willie Rand
Victoria Faust
Hulda Swenson / Janet Carter
Milton Kibbee
Herbert Sinclair (uncredited)
Robert Homans
Capt. Flynn
Janet Shaw
Gloria Bayne
Kenner G. Kemp
Police Radio Expert (uncredited)
Charles Sherlock
Sgt. McGraw (uncredited)
Charles Wagenheim
Rausch (uncredited)
I. Stanford Jolley
Rolf Brot, alias Ralph Brett
Virginia Brissac
Mrs. Marsh
Ben Carter
Ben Carter
Crane Whitley
Henchman Cooper
Frank Mayo
Det. Hodge (uncredited)
Reid Kilpatrick
Mr. Chester, program announcer
Kernan Cripps
Detective (uncredited)
Charles Jordan
Nelson (uncredited)