Victorian Undead horde of zombies. Being driven to a corner while learning that shooting the zombies in the head will effectively dispatch them, Holmes and Watson are saved by the arrival of heavily armed and armored Royal Marines led by the former's brother, Mycroft Holmes. After saving Holmes and Watson, Mycroft escorts them to the surface and proceeds in providing them answers. As Holmes and Watson are being escorted, Sebastian Moran spies them from afar and travels to Whitechapel, where he reports his news to his master - an undead Professor Moriarty. At the Diogenes Club, Mycroft debriefs Holmes and Watson of
Mary Russell (character) as well as meeting Holmes, Russell prepares for and eventually passes the entrance exams to Oxford University, where she reads chemistry and theology. In addition to Holmes, who acts a mentor and father substitute early in their relationship and eventually becomes her husband, Russell becomes close to other characters from the Holmes canon: she considers Mrs. Hudson, who has accompanied Holmes to Sussex as his housekeeper, to be a mother figure, and she refers to Dr. Watson as "Uncle John" and Mycroft Holmes as "Brother Mycroft." She is also close to her farm manager Patrick and tends to make friends