Guest Stars Rupert Graves as DI Lestrade Una Stubbs as Mrs. Hudson Louise Brealey as Molly Hooper Mark Gatiss as Mycroft Holmes Andrew Scott as Jim Moriarty Amanda Abbington as Mary Morstan Jonathan Aris as Anderson Yasmine Akram as Janine Danlevy David Nellist as Mike Stamford Adam Greaves-Neal as Page Boy / Billy Natasha O'Keeffe as Emelia Ricoletti Tim McInnerny as Sir Eustace Carmichael Catherine McCormack as Lady Louisa Carmichael Stephanie Hyam as Jane Daniel Fearn as Newsvendor Ben Crowe as Driver Gerald Kyd as Thomas Ricoletti Charles Furness as PC Rance Tim Barlow as Wilder Richard Sutton as Diamond Damian Samuels as Giles
