Sherlock Holmes in Washington

Basil Rathbone

Sherlock Holmes

Nigel Bruce

Doctor Watson

Marjorie Lord

Nancy Partridge

Henry Daniell

William Easter

George Zucco

Heinrich Hinckel aka Richard Stanley

John Archer

Naval Lt. Pete Merriam

Gavin Muir

Mr. Lang, government agent

Edmund MacDonald

Detective Lt. Grogan

Don Terry

Howe

Mary Gordon

Mrs. Hudson

Bradley Page

Cady

Clarence Muse

George

Mary Forbes

Mrs. Pettibone

Holmes Herbert

Mr. Ahrens

Thurston Hall

Sen. Henry Babcock

Ian Wolfe

Antiques Store Sales Clerk

John Burton

Army Inspector (uncredited)

Gerald Hamer

Alfred Pettibone

Gilbert Emery

Sir Henry Marchmont (uncredited)

Margaret Seddon

Miss Pringle (uncredited)

Mary Field

Party Pianist (uncredited)

Colin Kenny

Hotel Doorman (uncredited)

Caroline Frances Cooke

Mrs. Ruxton

Roy William Neill

Director

William Tummel

Assistant Director

Bertram Millhauser

Writer

Bertram Millhauser

Screenplay

Bertram Millhauser

Original Story

Lynn Riggs

Screenplay

Arthur Conan Doyle

Characters

Howard Benedict

Associate Producer

Roy William Neill

Producer

Lester White

Director of Photography

Russell A. Gausman

Set Decoration

Otto Ludwig

Editor