Warner Oland as Charlie Chan

Drue Leyton as Pamela Gray

Ray Milland as Neil Howard

Mona Barrie as Lady Mary Bristol

Douglas Walton as Hugh Gray

Alan Mowbray as Geoffrey Richmond

George Barraud as Major Jardine

Paul England as Bunny Fothergill

Madge Bellamy as Becky Fothergill

Walter Johnson as Jerry Garton

Murray Kinnell as Phillips

E. E. Clive as Det. Sgt. Thacker

Elsa Buchanan as Alice Rooney

Perry Ivins as Asst. Home Secretary Kemp

Reginald Sheffield as Flight Cmdr. King (uncredited)

Frank Baker as Bobbie (uncredited)

Mary Gordon as Prison Visitor (uncredited)

Claude King as RAF Aerodrome Commander (uncredited)

David Torrence as Home Secretary

John Rogers as Lake