Raymond Massey

Sherlock Holmes

Lyn Harding

Dr. Grimesby Rylott

Angela Baddeley

Helen Stonor

Athole Stewart

Dr. John Watson

Nancy Price

Mrs Staunton

Marie Ault

Mrs. Hudson (uncredited)

Jack Raymond

Director

W.P. Lipscomb

Adaptation

Arthur Conan Doyle

Story

Herbert Wilcox

Producer

Freddie Young

Director of Photography

Maclean Rogers

Editor

Lawrence P. Williams

Art Direction

L.F. Odell

Sound Recordist