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