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The Final Problem

Season 4 Episode 3 | 1hr 29m 59s

In this episode, written by Mark Gatiss and Steven Moffat, long-buried secrets catch up with the Baker Street duo. Someone has been playing a long game indeed and Sherlock and Watson face their greatest ever challenge. Is the game finally over?

Aired: 01/14/17
Funding for MASTERPIECE is provided by Viking and Raymond James with additional support from public television viewers and contributors to The MASTERPIECE Trust, created to help ensure the series’ future.
Extras
Big Cats 24/7 is back in the stunning Okavango Delta, revealing the dramatic lives of its big cats.
Professor Tempest and the police return to solve more complex and intriguing crimes.
Joshua Hopkins, Federica Lombardi, and Olga Kulchynska sing an excerpt from the Act II trio.
It's the finale and two rounds of cooking remain before one of the finalists gets named the winner.
O imagines that he can go see all types of fairytale bathrooms!
Sienna goes to a festival with her family and learns to use the potty at a public event!
Jodi is at the neighborhood concert and learns how she can use an outdoor bathroom there!
A song about how if you need to go potty someplace new, you can use a different bathroom.
Daniel learns all about how he can use the bathroom at the train station.
Katerina imagines she's a baker at a mozie bakery!
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