Basil Rathbone

Sherlock Holmes

Nigel Bruce

Dr. John H. Watson

Patricia Morison

Mrs. Hilda Courtney

Frederick Worlock

Colonel Cavanaugh

Harry Cording

Hamid

Carl Harbord

Inspector Hopkins

Holmes Herbert

Ebenezer Crabtree

Edmund Breon

Julian 'Stinky' Emery

Patricia Cameron

Evelyn Clifford

Mary Gordon

Mrs. Hudson

Ian Wolfe

Commissioner of Scotland Yard

Leyland Hodgson

Tour Guide

Marjorie Bennett

Antique Shop Assistant (uncredited)

William H. O'Brien

Detective at Murder Scene

Frank Baker

Photographer

Sally Shepherd

Wallace Scott

Joe Cisto

Jack Curtis

Pub Patron (uncredited)

Cyril Delevanti

Convict at Dartmoor Prison (uncredited)

Charlie Hall

Cab Driver (uncredited)

Olaf Hytten

Alfred - Auction House Bookkeeper (uncredited)

Frank Mills

Pub Patron (uncredited)

Lillian Bronson

Minister's Wife (uncredited)

Bobby Hale

Pub Patron (uncredited)

Alexander Pollard

Crabtree's Assistant at Auction (uncredited)

Roy William Neill

Director

Frank Gruber

Adaptation

Arthur Conan Doyle

Story

Leonard Lee

Screenplay

Martin Obzina

Art Direction

Roy William Neill

Producer

Edward R. Robinson

Set Decoration

Vera West

Costume Design

Howard Benedict

Executive Producer

Jack Pierce

Makeup Department Head

Maury Gertsman

Director of Photography

Russell A. Gausman

Set Decoration

Carmen Dirigo

Hairstylist

Saul A. Goodkind

Editor

Milton Rosen

Music Director

Bernard B. Brown

Sound Director

Jack Otterson

Art Direction