Now that you've seen the riveting Sherlock Season 3 finale, react with other fans. Also, see cast video interviews, take our episode trivia quiz, read a synopsis 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?
Sign up for MASTERPIECE email and get the latest scoop on the series, exclusive video, sweepstakes and more. Update your email address if you're an existing subscriber.
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.
Explore our rich history and find programs alphabetically or chronologically.