Sherlock Holmes

Basil Rathbone

Dr. Watson

Nigel Bruce

Professor Moriarty

George Zucco

Ann Brandon

Ida Lupino

Jerrold Hunter

Alan Marshal

Billy

Terry Kilburn

Sir Ronald Ramsgate

Henry Stephenson

Inspector Bristol

E.E. Clive

Inspector Bristol

E. E. Clive

Mrs. Hudson

Mary Gordon

Henchman Bassick

Arthur Hohl

Mrs. Jameson, Brandon Housekeeper

May Beatty

Lloyd Brandon

Peter Willes

Justice of the Court

Holmes Herbert

Henchman Mateo

George Regas

Lady Conyngham

Mary Forbes

Dawes

Frank Dawson

Tony Conyngham (as Anthony Kemble Cooper)

Anthony Kemble-Cooper

Inquisitive Stranger

William Austin

Barrows - Moriarty's Attorney (uncredited)

Leonard Mudie

Foreman of the Jury (uncredited)

Robert Nobel

Gates - Trial Prosecutor (uncredited)

Ivan F. Simpson

Clerk of the Court (uncredited)

Neil Fitzgerald

Tompkins (uncredited)

Frank Baker

Denis Green (uncredited)

Denis Greene

Tower Sentry (uncredited)

Robert Cory

Guard (uncredited)

Gordon Hart

Constable (uncredited)

Keith Hitchcock

Bobby (uncredited)

Ivo Henderson

Cockney

Frank Benson

Bobby (uncredited)

Leyland Hodgson

Pub Customer

Ted Billings

Bobby (uncredited)

Boyd Irwin

Marine Sergeant (uncredited)

Charles Irwin

Second Fake Constable (uncredited)

Harry Cording

Cabby (uncredited)

Robert R. Stephenson

Sergeant of the Guard

Denis Green

Conyngham Butler (uncredited)

Eric Wilton

Scotland Yard Man (uncredited)

Herbert Evans