福尔摩斯在华盛顿

Basil Rathbone

Sherlock Holmes

奈杰尔·布鲁斯

Doctor Watson

Marjorie Lord

Nancy Partridge

亨利·丹尼尔

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