Sherlock (2010– )
161 user 19 critic

The Final Problem 

A dark secret in the Holmes family rears its head with a vengeance, putting Sherlock and friends through a series of sick, manipulative psychological and potentially fatal games.


Benjamin Caron




Episode cast overview, first billed only:
Benedict Cumberbatch ... Sherlock Holmes
Martin Freeman ... Dr. John Watson
Mark Gatiss ... Mycroft Holmes
Una Stubbs ... Mrs. Hudson
Rupert Graves ... DI Lestrade
Louise Brealey ... Molly Hooper
Amanda Abbington ... Mary Watson
Andrew Scott ... Jim Moriarty
Sian Brooke ... Eurus Holmes (as Siân Brooke)
Art Malik ... Prison Governor
Timothy Carlton ... Mr. Holmes
Wanda Ventham ... Mrs. Holmes
Simon Kunz ... Sir Edwin
Richard Crehan Richard Crehan ... Ben
Ralph Ineson ... Vince


Long-buried secrets finally catch up with the Baker Street duo. Someone has been playing a very long game indeed and, alone and defenseless, Sherlock and Dr Watson face their greatest ever challenge. Is the game finally over? Written by BBC One

Plot Summary | Add Synopsis


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Release Date:

15 January 2017 (UK) See more »

Also Known As:

The Final Problem See more »


Box Office

Cumulative Worldwide Gross:

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Company Credits

Production Co:

Hartswood Films See more »
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Technical Specs


Sound Mix:

Dolby Digital (5.1)



Aspect Ratio:

16:9 HD
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Did You Know?


Season's final episode 'The Final Problem' is also the name of the final episode of tv series 'Adventures of Sherlock Holmes' (1984). See more »


When Eurus is a little girl she has brown eyes, when she is Johns therapist, she takes out a brown contact lens revealing blue eyes. See more »


[first lines]
Girl on Plane: Mummy?
[looks around and sees all other passengers are unconscious]
Girl on Plane: Mummy. Wake up! Wake up! Mummy!
See more »

Crazy Credits

ANEMOI-these are the letters in red in the end credits-the ANEMOI were the gods of the four winds--Boreas (the north wind), Zephyrus (the west wind), Notus (the south wind), and Eurus (the east wind). It is also an anagram of "I AM ONE". See more »


References Star Wars: Episode IV - A New Hope (1977) See more »


The Number of the Beast
Written by Steve Harris
Performed by Iron Maiden
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User Reviews

Sherlock's smarter sister
20 December 2017 | by LejinkSee all my reviews

Saving the best for last, the third episode of the most recent miniseries finally gave me all I want in a Sherlock story. With nods along the way to "The Ring" ,"Citizen Kane" "Silence Of The Lambs", and Edgar Allen Poe it started mysteriously and intriguingly with a little girl as the only passenger awake on a bound-to-crash jet airliner using her mobile phone to somehow reach Sherlock in her plight.

Then, cut to Sherlock and Watson, along with Mycroft, setting out for the remote, state-of-the-art prison complex wherein is incarcerated the Holmes' long lost sister we learned about only in the previous episode. But why can't Sherlock remember her from his childhood and just what is the mystery of the family dog "Redbeard"? All this and the apparent return of Jim Moriarty from beyond the grave, who could want more?

The latter anomaly is cleverly and credibly explained, although I still wish it could somehow become reality, but the gradual exposition of Sherlock's dark childhood which is the key to everything ("Redbeard" = "Rosebud" anyone?) is played out along a suitably twisty-turny road.

There were so many scenes where I was made to smile knowingly at the cleverness of the writing and then the staging of events. I loved Sherlock's "touching" first encounter with evil sister Eurus, the sequence of locked-room situations from which Sherlock had to contrive escapes, his interplay with Mycroft and Watson, especially Mycroft's would-be sacrifice and the "Redbeard" reveal before the conclusion.

My only caveats would be the prominence given to Una Stubbs' ever more eccentric Mrs Hudson and the lingering presence of Watson's dearly departed wife but otherwise this was one of the very best episodes of the show I've seen. I know that Steven Moffat has passed on the Dr Who baton but on the strength of this, I hope he stays around to run the affairs of our tousle-haired 'tec for some time to come.

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