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Sherlock - S4E3 - The Final Problem

Previously on Sherlock, “The Lying Detective”

This review will contain spoilers for “The Final Problem”.

Images: PBS

Images: PBS

If this episode was indeed the final problem, it’s hard for even the most dedicated Sherlock fan to complain; the finale was as great as the series gets. “The Final Problem” examined what has always made Sherlock Holmes interesting: not his intellect or art of deduction, but his relationships. For the past four seasons we’ve watched how his mind works, how he retreats into it for long periods of time, and how he uses it to store massive amounts of information (mind palace). It makes sense that his mind would also rewrite memories to hide the things he could not face; namely, the existence of a sister and the terrible thing she did when they were children.

Sherlock - ExplosionAfter Sherlock scares the truth about Eurus out of Mycroft, he, Watson, and Mycroft head to Sherrinford, the top-secret island prison Eurus has called home since Mycroft faked her death years before, to confront her.

If Sherlock is a brilliant sociopath and Mycroft a brilliant man unable to connect to others, Eurus is a brilliant combination of all their worst qualities. Her ability to reprogram others - plus some help from Moriarty before he died - allowed her to set the perfect trap for her brothers. She puts them through a series of tests with lives literally hanging in the balance. Only when Watson’s life is in danger does Sherlock finally break through his self-imposed mental block and confronts the awful truth about Eurus - out of jealousy, she murdered Sherlock’s best friend, Victor, when they were children.

Sherlock - S4E3 - Eurus

Perhaps it’s because they’re so alike or that Sherlock understands that he could have been Eurus, he extends kindness and forgiveness, visiting her regularly when she’s once again secured in Sherrinford. Mycroft also has to answer for his role in keeping Eurus hidden from Sherlock and their parents, and also for connecting her with Moriarty in the first place.

Sherlock has faced its fair share of criticism, and a bit of it deserved, but it has never failed to deliver excellent performances, fun twists (even when they’re ridiculously over-the-top like the haunting at Mycroft’s house), and one of the best friendships on television.

I hope this isn’t the last we see of the Baker Street boys, but if it is, they’ve left me thoroughly satisfied.

Sherlock and Watson

The Final Questions

  • Was Sherlock texting Irene Adler?
  • Would some closure on Molly (especially after that devastating phone call) been too much to ask?
  • You know what? A full season may be too much to ask, but can we get a few two-hour Christmas specials here and there? Hell, I’d settle for an Easter episode.

Leave your thoughts on the episode below or on the Facebook post for this review and we’ll read them on tonight’s podcast.

Sherlock S4E3
  • 9/10
    Plot - 9/10
  • 9/10
    Dialogue - 9/10
  • 10/10
    Performances - 10/10

"The Final Problem"

Sherlock - S4E3 - “The Final Problem” | Starring: Benedict Cumberbatch, Martin Freeman, Una Stubbs, Rupert Graves, Mark Gatiss, Louise Brealey, Amanda Abbington, Lindsay Duncan, Sian Brooke | Written by: Steven Moffat & Mark Gatiss | Directed by: Benjamin Caron

User Review
4.5 (2 votes)

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About Nina Perez (1389 Articles)
Nina Perez is the founder of Project Fandom. She is also the author of a YA series of books, "The Twin Prophecies," and a collection of essays titled, "Blog It Out, B*tch." Her latest books, a contemporary romance 6-book series titled Sharing Space, are now available on for Kindle download. She has a degree in journalism, works in social media, lives in Portland, Oregon, and loves Idris Elba. When not watching massive amounts of British television or writing, she is sketching plans to build her very own TARDIS. She watches more television than anyone you know and she's totally fine with that.

2 Comments on Sherlock - S4E3 - The Final Problem


    WOW! This one left me speechless. I was side eyeing that little sociopath Eurus, but by the end my heart broke for her-but then I was side eyeing her cause she killed another kid. But then she was a kid. I just don’t know how to feel! I figured out Eurus’ play at Sherrinford at the same time as Watson, and was yelling at the screen “Mycroft shut the hell up and listen!!!!” The inclusion of Moriarity and the impact of what it means over the last four seasons is mindblowing!

    If this is the series finale, I feel it was beautifully done. I don’t want it to be the end for my boys, but understand if it is. Thanks for covering this one guys!

  2. For The Podcast:

    That was the most intense episode of Trivia Murder Party ever!

    But in all seriousness, this episode was amazing. The ending broke me. The music was amazing. I loved how similar Eurus and Sherlock are. Yes, I know you could argue that it’s shortsighted that most of the women in the show are villains turned “allies”, but for me it’s always been about Sherlock and Watson. (Then again, it might not be my place to say anything on that topic)

    Then I went on Twitter after. Y’all, this is why we can’t have nice things! I loved the finale, no one can change that. It’s been great. I want more, but understand if we can’t get any. This season was great. Time to rewatch from the beginning again!
    Cheers for the coverage!

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