What is the title of Sherlock’s second episode in series 3?
Answer
The Sign of Three
Sherlock’s second episode in series 3 is titled “The Sign of Three.”
The episode centres on the wedding of John Watson and Mary Morstan, played by Martin Freeman and Amanda Abbington. Sherlock serves as the best man and prepares a long speech that becomes a series of connected memories, deductions, and stories about cases involving Watson.
The title refers to the three central figures in the changing relationship: Sherlock, John, and Mary. It also echoes The Sign of the Four, Arthur Conan Doyle’s second Holmes novel, while fitting the episode’s emphasis on partnership and family.
“The Sign of Three” was written by Mark Gatiss, Steven Moffat, and Stephen Thompson, and directed by Colm McCarthy. It aired on BBC One on 5 January 2014. The episode balances a celebratory wedding setting with a mystery involving a planned murder.