Young Sherlock TV Series Cast 2026 – Young Sherlock is a new mystery tv series on Amazon Prime Video. The series tells the early story of the famous detective Sherlock Holmes. It begins with an intense scene in a prison yard, showing that this version of Holmes’ world is full of action and danger.
The series is directed by Guy Ritchie, who earlier made the Sherlock Holmes films starring Robert Downey Jr. and Jude Law. This new show mixes classic detective ideas with Ritchie’s fast, action-heavy style, giving the famous character a different and more energetic feel. In this post you will find out the full cast list, story, release date and series trailer information in simple form.
Young Sherlock TV Series Cast 2026: Full Cast List
Here is complete cast & crew list of Young Sherlock TV Series with his actor & character details
| Actor | Character / Role |
|---|---|
| Hero Fiennes Tiffin | Sherlock Holmes |
| Dónal Finn | James Moriarty |
| Natascha McElhone | Cordelia Holmes |
| Zine Tseng | Princess Gulun Shou’an |
| Max Irons | Mycroft Holmes |
| Numan Acar | Esad Kasgarli… |
| Ravi Aujla | Professor Kishore Malik |
| Holly Cattle | Edie |
| Purdy Hughes | Young Beatrice |
| Joseph Fiennes | Silas Holmes |
| Colin Firth | Bucephalus Hodge |
| Scott Reid | Constable Lestrade |
| Stephen Agnew | Nathan Burford |
| Paul Antony-Barber | Professor Charles Thompson |
| Billy Byers | Young Mycroft |
| Lucien Guo | Young Sherlock |
| Iris Li | Mei Yi Liu |
| Ian Midlane | Professor Ambrose Roberts |
- Directors — Guy Ritchie (2 episodes) · Anders Engström (3 episodes) · Tricia Brock (2 episodes) · Dennie Gordon (1 episode)
- Writers — Matthew Parkhill · Peter Harness · Francesca Lin · Kt Roberts · Andrew Lane (inspired by his Young Sherlock Holmes novels)
- Creators / Showrunner — Matthew Parkhill
- Developed by — Peter Harness, Guy Ritchie
- Producer — Max Keene
- Production Companies — Inspirational Entertainment · Motive Pictures · Toff Guy Films · Amazon MGM Studios
- Network — Amazon Prime Video
- Release Date — March 4, 2026
- Episodes — 1 Season · 8 Episodes
- Genre — Mystery · Drama
- Opening Theme — “Days Are Forgotten” by Kasabian
- PostPublished By – castadda.com
Young Sherlock TV Series Story
n this story, Sherlock Holmes says he has always been more of a thinker than a fighter. He believes fighting and war are also a kind of art. Now he has started a new life in Oxford. He wants to leave his old dangerous adventures behind and live peacefully. But his life again becomes full of secrets when he gets linked to a murder case.
Guy Ritchie’s Sherlock Holmes movies worked well because of the strong actors Robert Downey Jr. and Jude Law. Both actors brought charm and depth to the story. Their performances made the films more interesting.
In the new series Young Sherlock, the main role is played by Hero Fiennes Tiffin. Many people know him as Tom Riddle from Harry Potter and the Half-Blood Prince. He also starred in the After romance film series. In the show, Joseph Fiennes plays Sherlock’s father, Silas.
Hero Fiennes Tiffin looks stylish, but he does not fully fit the role of Sherlock Holmes. Sherlock is usually shown as a quiet and serious thinker. In this series, the character feels a bit different. The casting choice may surprise some viewers.
The show is said to be inspired by the Young Sherlock Holmes books by Andrew Lane. But the series changes many things from the books. In the novels, Sherlock is only 14 years old when the story begins. In the TV show, he is 19 years old. The actor playing him is even older.
At the start of the story, Sherlock gets into trouble after talking back to a judge. His older brother Mycroft Holmes helps him get out. Mycroft then sends him to study at Oxford University, which he calls one of the greatest universities in the world.
But when Sherlock arrives, things are not what he expected. Instead of being a student, he is given a servant’s job. Soon he gets pulled into a strange mystery. The story involves a Chinese princess and the murders of several professors. Somehow, Sherlock becomes the main suspect.
Sherlock then tries to clear his name. A new friend named James Moriarty, an Irish student, helps him. Together they follow many clues and secrets. The mystery slowly grows bigger. In the end, the case connects to Sherlock’s own family and even a plan that could threaten the whole world.
Young Sherlock Series Release Date & OTT
Young Sherlock premiered on March 4, 2026. All episodes were released on the same day.
Young Sherlock Season 1 Episodes Schedule
| # | Episode Title | Air Date | Runtime |
|---|---|---|---|
| 1 | The Case of the Missing Scrolls | Mar 4, 2026 | 53 min |
| 2 | The Case of the Burnt Photograph | Mar 4, 2026 | 45 min |
| 3 | The Case of the Unarmed Man | Mar 4, 2026 | 43 min |
| 4 | The Case of the Missing Button | Mar 4, 2026 | 49 min |
| 5 | The Case of Young Sherlock Holmes | Mar 4, 2026 | 51 min |
| 6 | The Case of the Killing Jar | Mar 4, 2026 | 48 min |
| 7 | The Case of the Two Corners | Mar 4, 2026 | 49 min |
| 8 | The Case of Beatrice Holmes | Mar 4, 2026 | 55 min |
All 8 episodes were released together on the premiere date.
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Young Sherlock Tv Series Official Trailer
Watch the official trailer of Young Sherlock series released by Amazon Prime Video.
Where to Watch Young Sherlock Season 1 (2026)?
The mystery series is streaming on Amazon Prime Video. Viewers can watch the whole season at once. The show tells the early story of Sherlock Holmes. It follows his first adventures and cases. These experiences slowly shape him into the famous detective people know today.
FAQs: Young Sherlock Season 1 (2026)
Q1. Is Young Sherlock Tv Series out yet?
Ans. Yes, Young Sherlock released on March 4, 2026 on Amazon Prime Video.
Q2. Where can I watch the Young Sherlock series?
Ans. You can watch Young Sherlock on Amazon Prime Video worldwide.
Q3. Is Young Sherlock season 1 connected to Sherlock Holmes?
Ans. Yes, Young Sherlock shows the early life of Sherlock Holmes.
Q4. Is Young Sherlock worth watching?
Ans. Yes, Young Sherlock is a fun mystery show with action and detective stories.
