Russell Napier

as Capt. Stanley Lord

as Air Vice Marshal (uncredited)

as Landlord

as Flag Captain

as Dr. Green

as Professor Fuller

as Thompson

as Superintendent

as Jack Burns

as Brother Elias

as Det. Cutler

as Col. Stafford

as Colonel Thompson

as Leeds

as 2nd Plain Clothes Officer

as Parker

as Detective at Ann's Apartment (Uncredited)

as Potter

as Insp. Treherne

as Inspector Markham

as Banker Green

as Detective Sgt. Bolton

as Insp. Durham

as Supt. John Harrington

as Scotland Yard Supt. Davidson

as Squire Myles

as Sir Henry Dimmock

as Wg. Cmr. Rogers

as Headmaster

as Inspector Simmons

as Inspector Hobson

as Sir Harold Plant

as Dr Stephen Lewis

as Raymond Curtis

as Narrator

as Inspector Harmer

as Stevens

as Supt. Walshaw

as Inspector Duggan

as Admiral Habberfield

as Narrator