Show Review: Sherlock Season 3 (Spoiler-Free)

Rating: 10 out of 10 stars


Season 1 and 2 were phenomenal, so watching Season 3 was a no-brainer.

As this is a spoiler-free review, I will limit how much I reveal of the plot.

This review contains no spoilers for Season 3, but it does contain spoilers for Season 1 and 2.


Sherlock Season 3 aired in 2014 and was produced by BBC and Hartswood films. It is based off of Arthur Conan Doyle’s Sherlock Holmes books, but instead of being placed in Victorian England, the show is set in modern-day London.

The show stars Benedict Cumberbatch, Martin Freeman, Rupert Graves, Una Stubbs, Mark Gatiss, Louise Brealey, Andrew Scott, and Amanda Abbington.

In addition to being nominated for various awards, Sherlock won in three categories in the Primetime Emmy Awards.


Last season, the villain Moriarty and Sherlock went head to head, which ended with Sherlock’s apparent suicide to save his friends. The final episode of Season 2 offered a glimpse of Sherlock alive–and fans had to wait until Season 3 for an explanation.

Season 3 basically establishes a plausible way Sherlock could have survived and inserts him back into Watson’s life. That doesn’t go as Sherlock planned, and he discovers there is someone new in Watson’s life–the witty Mary Morstan.


  • Phenomenal acting
  • Immersive setting highly relevant to a modern-day audience
  • Strong character development
  • Benefit of a familiar character with a new spin
  • Benefit of a new and intriguing characters
  • Realistic emotional reactions to Sherlock showing up again
  • Dynamic of Sherlock, Watson, and Mary
  • Villain who is easy to hate
  • Intelligent, occasionally comical, script
  • Engaging plot
  • Catchy theme song and music
  • Development of the concept of a mind palace
  • Satisfying answer to how Sherlock survived


  • Nothing that I could think of.



The acting, especially by Benedict Cumberbatch and Martin Freeman, was incredible. They both played their parts well.

All of the fantastic and obnoxious qualities of Sherlock were brought out and emphasized. 

This season brings the talents of Amanda Abbington to the screen as Mary Morstan. The way that the actors for Sherlock, Watson and Mary interact shows great chemistry and skill.

Character Development

This season, we see Sherlock become increasingly more human as he spends more time with Watson and Mary. He shows actual affection for Watson in particular, but also Mary as he gets to know her. So much for “high-functioning sociopath.”

He is still his usual thoughtless self, however, which is shown in the way he springs the news of his survival to Watson like a joke. Like, haha, you grieved me and then moved on for two years, but I was alive the whole time! Hilarious, right?

I could have slapped him. That is a mark of a good story though–caring enough about the characters to be disappointed in them when they do wrong. Watson’s reaction was entirely realistic and understandable.

Watson develops as a person through his relationship with Mary. Unlike with his previous relationships, this one does not pull him away from Sherlock. Mary instead takes an active part in their lives and adds to their duo.

New Characters

Mary Watson (BBC series) | Heroes and Villains Wiki | Fandom

Mary Morstan is an incredible character with a lot of depth to her. She is the one person who can see through Sherlock’s lies.

Rather than being a hindrance to the team of Sherlock and Watson, she is an asset with a skill set of her own. Sherlock and Watson both appreciate her skills.

Charles Augustus Magnussen | Villains Wiki | Fandom

Magnussen is a new villain in Season 3. Even though Moriarty has his own issues with licking things, Magnussen is worse because he licked a person. Nonetheless, he is very intelligent. He is called “the Napoleon of blackmail.”


The script is frequently witty and well-written. One of my favorite quotes in this season is said by Sherlock after Watson says he has moved on with his life:

What life? I’ve been away.”


This emphasizes Sherlock’s thoughtlessness while adding to the humor of the episode.

When it is suggested that Sherlock does not understand human nature, he replies:

Nature? No….

Human? No.”


Another quote I enjoy is by Mrs. Hudson. She is complaining about the small role that she has in Watson’s stories.

I’m your landlady, not a plot device.”

Mrs. Hudson

Sherlock Season 3 is chock-full of quotable material, demonstrating how witty and worthwhile the show is.


The theme song of Sherlock is catchy enough to get stuck in my head. The show also uses music at critical moments to increase humor. One instance of that is when Watson tackles Sherlock, the musical sequence playing in the background is energetic and funny.


If you liked Season 1 and 2, Season 3 will not disappoint. If anything, the addition of Mary makes the story even more interesting and humorous.

Rating System

If you are interested in how I rate shows, check out my rating system.

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