Guy Ritchie returns to the world of Sherlock Holmes with a new television series that rewinds the clock to the detective’s earliest days. Instead of the polished genius audiences know from Baker Street, Young Sherlock follows a reckless 19 year old who has not yet mastered the discipline that will define him later in life.
Set at Oxford University in the 1870s, the show explores Sherlock’s first major investigation after he is framed for murder. The case slowly turns into a larger conspiracy that begins shaping the mind of the future detective. The series premiered worldwide on Prime Video on March 4, 2026 with all eight episodes available to stream.
Below is a complete guide to the release schedule, cast, plot, episode list, and streaming details.
Plot and Story Setting
The series is inspired by the Young Sherlock Holmes novels written by Andrew Lane, which explore the early life of the legendary detective before the events of Arthur Conan Doyle’s original stories.
At the start of the show, Sherlock arrives at Oxford University as a rebellious teenager who lacks discipline. He is not yet the analytical genius fans recognize. Instead, he is impulsive, curious, and often reckless.
After being framed for murder at Oxford, Sherlock begins investigating the case himself. The search for answers leads him into a wider conspiracy that spans beyond the university. Along the way, he meets allies and enemies who will later shape his life.
One of the most surprising elements of the story is Sherlock’s early friendship with James Moriarty, the man who will eventually become his greatest adversary.
Release Schedule & Where to Watch
In a move that will delight binge-watchers, Prime Video opted against a weekly rollout.
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Release Date: Wednesday, March 4, 2026
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Platform: Amazon Prime Video (Exclusive)
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Format: All 8 episodes were released simultaneously.
Unlike previous iterations like Sherlock (BBC/Hulu) or Elementary (Paramount+), the entire first season of Young Sherlock lives in one place, making it the perfect weekend marathon.
The ‘Young Sherlock’ Full Cast
Photo by Ian West – PA Images on Getty Images
The series features a stellar blend of “Gen Z” breakout stars and Hollywood royalty.
| Actor | Role | Character Description |
| Hero Fiennes Tiffin | Sherlock Holmes | A 19-year-old student at Oxford caught in a murder conspiracy. |
| Dónal Finn | James Moriarty | Sherlock’s best friend (for now) and fellow investigator. |
| Max Irons | Mycroft Holmes | Sherlock’s brilliant but bureaucratic older brother. |
| Joseph Fiennes | Silas Holmes | Sherlock’s adventurous and complex father. |
| Natascha McElhone | Cordelia Holmes | The supportive and warm matriarch of the Holmes family. |
| Colin Firth | Sir Bucephalus Hodge | An arrogant Oxford professor and antagonist. |
| Zine Tseng | Princess Gulun Shou’an | A fearless scholar with a romantic spark for Sherlock. |
Season 1 Episode Guide
Directed in part by Guy Ritchie (who helmed the first two episodes), the season follows Sherlock from being a murder suspect to a budding detective.
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“The Case of the Missing Scrolls” – Sherlock arrives at Oxford and immediately becomes a prime suspect in a police investigation.
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“The Case of the Burnt Photograph” – Jailed and desperate, Sherlock must clear his name to avoid the gallows.
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“The Case of the Unarmed Man” – Sherlock and Moriarty team up to find two missing professors.
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“The Case of the Missing Button” – A trip back to the Holmes estate uncovers childhood secrets.
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“The Case of Young Sherlock Holmes” – A tragic family accident from the past causes a rift between Sherlock and Moriarty.
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“The Case of the Killing Jar” – Sherlock discovers a shocking connection behind the Oxford murders.
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“The Case of the Two Corners” – Sherlock is forced to choose between his loyalty to the law and his loyalty to friends.
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“The Case of Beatrice Holmes” – The season finale culminates in a dangerous Holmes family reunion.
How This Version of Sherlock Holmes Is Different
Many viewers associate Sherlock Holmes with the calm and calculated versions portrayed by actors like Benedict Cumberbatch or Robert Downey Jr..
Young Sherlock takes a very different approach.
The story shows a young man who has not yet developed the emotional control and deductive discipline that define the character later in life. He is impulsive, quick to fight, and still learning how to observe the world around him.
The show also focuses heavily on the relationship between Sherlock and Moriarty before they become enemies. Instead of meeting as rivals, they start as friends who share curiosity and ambition.
That dynamic forms the emotional core of the series.
FAQs
Is Young Sherlock based on a book series?
Yes. The show is inspired by the Young Sherlock Holmes novels by Andrew Lane, which explore the teenage years of Sherlock Holmes before the classic stories by Arthur Conan Doyle.
How many episodes are in Season 1 of Young Sherlock?
The first season contains eight episodes, all released at once on Prime Video.
Where can you watch Young Sherlock?
The series is available exclusively on Amazon Prime Video.
Is Young Sherlock connected to the Robert Downey Jr. movies?
No. The series is a separate adaptation and is not part of the same continuity as the films directed by Guy Ritchie starring Robert Downey Jr.
Does Moriarty appear in the series?
Yes. The character appears early in the story and begins as a friend to Sherlock before their relationship evolves into rivalry.
Will there be a Season 2 of Young Sherlock?
As of now, Prime Video has not officially confirmed a second season.
Courtesy: Parade
