When did Sherlock Season 4 Episode 1 air?
Sherlock Season 4 Episode 1 aired on January 1, 2017.


Why is someone destroying images of Margaret Thatcher? Is there a madman on the loose? Or is there a much darker purpose at work?
Direct answers for episode-level questions and details.
Sherlock Season 4 Episode 1 aired on January 1, 2017.
This episode runs for approximately 89 minutes.
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