Guy Ritchie Director Robert Downey Jr. Sherlock Holmes Actor Jude Law Dr. John Watson Actor Noomi Rapace Madam Simza Heron Actor Rachel McAdams Irene Adler Actor Jared Harris Professor James Moriarty Actor Stephen Fry Mycroft Holmes Actor Paul Anderson Col. Sebastian Moran Actor Kelly Reilly Mary Watson Actor Geraldine James Mrs. Hudson Actor Eddie Marsan Inspector Lestrade Actor William Houston Constable Clark Actor Wolf Kahler Dr. Hoffmanstahl Actor Iain Mitchell Auctioneer Actor Jack Laskey Carruthers Actor Michele Mulroney Screenwriter Kieran Mulroney Screenwriter Anthony Peckham Screenwriter Joel Silver Producer Lionel Wigram Producer Susan Downey Producer Dan Lin Producer Bruce Berman Executive Producer Steve Clark-Hall Executive Producer Philippe Rousselot Cinematographer James Herbert Film Editing Hans Zimmer Original Music Sarah Greenwood Production Design James Foster Art Director Nick Gottschalk Art Director Matthew Gray Art Director Alison Harvey Set Decoration Jenny Beavan Costume Design Reg Poerscout-Edgerton Casting