React with other fans, see cast video interviews, take our episode trivia quiz, and more.
Sherlock stars and creators on Magnussen and Mary.
How excellent is YOUR memory? Find out in this trivia quiz.
Learn all about Mary, and Amanda Abbington, the actress who portays her.
Read a full recap of all the action.
Are you more like a high-functioning sociopath or a sidekick with an edge?
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Funding for MASTERPIECE is provided by Viking River Cruises and Audible with additional support from public television viewers and contributors to The Masterpiece Trust, created to help ensure the series' future.
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