Sherlock Holmes

Dr. John Watson

Lydia Marlowe

Professor James Moriarty

Sir George Fenwick

Inspector Gregson

Maude Fenwick

Dr. Onslow

Dr. Simnell

Corporal Williams

Crandon

Mrs. Hudson

Waring the Mesmerist (uncredited)

Shoelace Vendor Henchman (uncredited)

Carter the Hypnotized Subject (uncredited)

Bar Patron (seen in mirror) (uncredited)

4th Victim (uncredited)

Commissioner of the CID (uncredited)

Fenwick's Butler Norris (uncredited)

Short-Tempered Officer Closing Window (uncredited)

Member of Mesmer Club (uncredited)

Pembrook House Waiter (uncredited)

Producer

Director

Director of Photography

Editor

Art Direction

Set Decoration

Special Effects

Costume Design

Assistant Director

Screenplay

Music Director

Art Direction

Sound Director

Set Decoration

Camera Operator

Novel