Here’s what we can expect from ‘Sherlock’ Season 4

It’s been almost three years since the last season of Sherlock and one year since the Christmas special, but Sherlock Season 4 is finally here! Here’s what to expect from the latest adventures of Sherlock Holmes and Dr. John Watson. Possible spoilers below!

It’ll be dark


One thing that is made apparent by the trailers is that this season will be darker than any of the previous ones. The trailer has an ominous tone and is filled with foreboding dialogue:

“The roads we walk have demons beneath,” Mycroft warns Sherlock, “and yours have been waiting for a very long time.”

Steven Moffat, the co-creator of the show, said the following about the upcoming season: “We’re certainly going to put them through the mill. It’s going to be more of an emotional upheaval. Hopefully enjoyable and fun, all the things Sherlock must always be. It will be tough at times. Maybe that’s the word? A tougher series.” It’s difficult to imagine how much darker the show can get. We’ve had a faked suicide, several betrayals, and plenty of attempted and successful murders. Many fans are worried that this season will be the last for one of their beloved characters, citing Mycroft and Mary as the most likely candidates.

Baby Watson!


There’s a new Watson, little Rosamund, and her presence definitely shakes things up for our favorite duo. Co-creator Mark Gatiss said that the arrival of “the baby changes the dynamic” between Sherlock and John, “but not in a cutesy way.” That said, I sincerely hope we get a scene with Sherlock babysitting the newest addition to the Watson family.

There’s a new villain


We know that Toby Jones will be playing the big bad of this season. You might recognize him as Arnim Zola from the first two Captain America films. Based on a statement from Moffat, we know that he’ll be playing a villain from the original Conan Doyle stories. We also know that Jones will be playing the most evil villain in the show so far.

Moffat said the following about Jones’ character: “This guy is the purest evil. Sherlock is actually appalled by him. He’s the most evil villain we’ve had. I don’t think that when you see it, you will disagree. He’s horrific.”

Sherlock has a dog


In Season 3 of the show, we learn about Sherlock’s childhood dog, Redbeard, who had been put down. Mycroft reminds Sherlock of the dog in an effort to warn his little brother about the consequences of getting too attached to things, namely people. Based on the promotional pictures for the latest season, it doesn’t seem like Sherlock took his brother’s advice as he has a bloodhound at his side in several of the promotional images.

In the original stories, Sherlock does briefly use a sniffer dog called Toby in the Sign of Four, but the dog doesn’t belong to him. In the novel, Sherlock says that he would “rather have Toby’s help than that of the whole detective force in London,” so we can assume that this dog is more than a companion and might be helping Sherlock with a case.

Everything will change


While there are many reports that this might be the final season of Sherlock, there hasn’t been a definitive statement from the cast or crew. That said, it’s clear that something major will occur this season that will have a lasting impact on the characters. Moffat said the following about the season: “This is the story we’ve been telling from the beginning and it’s about to reach its climax.” We know the last episode of the season is titled “The Final Problem,” which in the original stories is when Sherlock and Moriarty have their final showdown, but Sherlock has already told that story. Based on the title of the final episode, we can speculate that whatever happens, it’ll be big.


Sherlock Season 4 will return with “The Six Thatchers” on January 1, 2017 on MASTERPIECE on PBS and BBC. If you haven’t already, watch the Sherlock Season 4 trailer here:

(Image: BBC)


Tamar Altebarmakian

Writer, fangirl, and cat-enthusiast. My work has appeared on The Mary Sue, The Portland Review, Ranker, and other websites. My favorite show growing up was Xena – I've tried to emulate the Warrior Princess in every way (see current hairstyle).

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