Holmes resumes his hunt for Moriarty when Sebastian Moran reveals that Sherlock's nemesis may be responsible for a series of recent murders, including the death of a man who was thought to have died from a heart attack.
Holmes takes a case from a man who claims to be Moriarty in hopes of finding his nemesis. Meanwhile, Gregson tries to get Joan to give up detective work and return to being a sober companion; and Sherlock's former lover, Irene Adler, appears.
- Birth Name: Lucy Alexis Liu
- Birth Place: Queens, New York, United States
- Birthday: December 2, 1968, Sagittarius
- Profession: Actor, Producer, Model