Benedict Cumberbatch and the Sign of Four (or is it Three?)

Extras

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  A New Villain

  Be the first to learn about Sherlock Season 4's villain, played by Toby Jones.

  1:31
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  Sherlock as Babysitter

  Would Sherlock make a good babysitter to the Watson's newborn? The cast weighs in.

  0:56
• 

  Timelapse of 221B Set Build

  See the 221B set being assembled!

  0:48
• 

  The Cast on Returning

  Here's the cast discussing returning to film Sherlock, Season 4

  0:57
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  The Cast on Parenthood

  The #SherlockPBS cast discusses the arrival of a new baby.

  0:57
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  Mary's Secret Past

  Amanda Abbington on Mary Watson's secrets.

  1:25
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  Best Thing About Working on the Series

  We asked the Sherlock cast: What's their favorite thing about working on the series?

  0:48
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  First Week of Filming

  Go back to April and the first week of filming Sherlock, Season 4.

  1:03
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  Cast's First Series Memory

  What was the cast's first memory of working on Sherlock? Find out!

  0:58
• 

  Creators Answer Revealing Questions

  Steven Moffat and Mark Gatiss get to know one another at San Diego Comic Con 2016.

  3:38