Cast of Sherlock

Benedict Cumberbatch takes on the role of Sherlock Holmes, a brilliant but eccentric detective living in modern-day London.

Martin Freeman plays Dr. John Watson, a pragmatic army doctor who becomes Sherlock's trusted friend and confidant.

Una Stubbs appears as Mrs. Hudson, the landlady of 221B Baker Street who supports Sherlock and John.

Rupert Graves is DI Greg Lestrade, a detective inspector at Scotland Yard who often works with Sherlock.

Louise Brealey portrays Molly Hooper, a pathologist at St. Bartholomew's Hospital who has a crush on Sherlock.

Mark Gatiss plays Mycroft Holmes, Sherlock's older brother and a senior government official.

Andrew Scott plays Jim Moriarty, Sherlock's arch-nemesis and a criminal mastermind.

Jonathan Aris takes on the role of Dr. Anderson, a forensic specialist at Scotland Yard.

Vinette Robinson is Sgt Sally Donovan, a police sergeant who is often skeptical of Sherlock.

Lara Pulver portrays Irene Adler, a woman who challenges Sherlock with her intelligence and wit.

Amanda Abbington plays Mary Morstan, John Watson's wife with secrets of her own.