character - Monty Clayton

character - Mr Horrobin

character - Chilwell

character - Sir Montague Corner

character - Lord Redesdale

character - Chartermain

character - Peter Montrose ("Murder at Midnight")

character - Dickie Melborne

character - Stanley

character - Tarquin

character - Maj. Daintry

character - Colonel

character - Colonel Hall

character - Philip Crane

character - Gus Ashley

character - Colonel Wright

character - Coroner

character - Jarvis

character - Jack Newton

character - The Lawyer

character - Belton

character - Hugh

character - Lomax

character - Adrian Beresford

character - Ian Osborn Utley

character - Hindsmith

character - Captain Douglas

character - Major Cranmore

character - Wilkins

character - Colonel Scuttling - Scotland Yard Man

character - Det. Thompson

character - Immigration Officer

character - Mr. Ballard

character - George Aisgill

character - Mr MacBryde

character - German Technical Examiner

character - Garsden

character - Major Donald Ross

character - Cavendish

character - Smythe

character - Jenkins

character - Housemaster

character - Member of Whitehall Conference

character - Dr. Fisher

character - Mr. Eccles

character - Bodley

character - Wilkie (uncredited)

character - Col. Hannerly

character - Da Silva

character - Superintendent Symington

character - Randolph St. John

character - Sylvan-Jones

character - Captain Patterson

character - Maj. Baker

character - Lord Melford

character - Webster

character - Lacey Marshalt

character - Capt. Eric Simpson

character - Capt. Christopher Connaught-Smith

character - Sexton

character - British Lieutenant

character - Captain

character - Philip

character - George Aisgill

character - Foley

character - Guards Officer

character - Brigadier's Staff Officer

character - Police Inspector

character - Chailey

character - Captain Donaldson

character - Dr. Stevenson

character - Det. Inspector

character - Colonel Packham

character - Vice-Admiral

character - Clifford

character - First Gentleman

character - Jonathan Redgrove

character - Billy

character - Henry Carmichael

character - Malbete

character - Lt. Col. Henniker