Charlie Chan in London

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