Young Sherlock out on OTT: Where to watch, plot explained, and more about Hero Fiennes Tiffin's action adventure drama

Young Sherlock, starring Hero Fiennes Tiffin, is finally out on OTT. Directed by Guy Ritchie, the action-adventure mystery series follows the legendary origin story of Sherlock Holmes.

Hero Fiennes Tiffin as Young Sherlock

As scheduled, Young Sherlock, a series based on the origin story of Sherlock Holmes is finally out on OTT, and it is streaming on Prime Video. Subscribers of OTTplay Premium can also watch it with a top-up option. The series is directed by Guy Ritchie.

How many episodes are there in Young Sherlock?

Prime Video's Young Sherlock Season 1 has 8 episodes in total: They are titled as Episode 1: The Case of the Missing Scrolls, Episode 2: The Case of the Burnt Photograph, Episode 3: The Case of the Unarmed Man, Episode 4: The Case of the Missing Button, Episode 5: The Case of Young Sherlock Holmes, Episode 6: The Case of the Killing Jar, Episode 7: The Case of the Two Corners, and Episode 8: The Case of Beatrice Holmes.

What's the story of Young Sherlock?

Guy Ritchie’s Young Sherlock (2026) on Amazon Prime Video is a high-octane origin story that reimagines Sherlock Holmes as a 19-year-old rebellious prodigy at Oxford. After being framed for murder, the disgraced detective, played by Hero Fiennes Tiffin, forms an uneasy alliance with a young and cunning James Moriarty (Dónal Finn) to unravel a dangerous global conspiracy.

Set in the 1870s, a headstrong and impulsive 19-year-old Sherlock Holmes is sent to Oxford, where a deadly explosion frames him for murder. To reclaim his reputation, he must navigate his first perilous case, one that quickly escalates into a sprawling, globe-spanning conspiracy filled with international intrigue.

This series is a fast-paced, stylish "origin story" that blends Guy Ritchie's signature directorial flair - punk-rock soundtrack, fast cuts, and witty dialogue - with Victorian-era mystery. It sheds light on the formative trauma and experiences that transform a reckless young man into a cold, calculating detective. The story features themes of betrayal and hidden loyalties, setting up a complex, dark future for Sherlock and Moriarty's relationship.

Who plays what in Young Sherlock?

In Young Sherlock Season 1, Hero Fiennes Tiffin plays a raw, chaotic, and unformed Sherlock Holmes. Dónal Finn portrays a brilliant scholarship student, James Moriarty, who is his close ally long before becoming a nemesis.

The case also features Max Irons as Mycroft Holmes, Sherlock’s buttoned-down and stern older brother, and Colin Firth as Sir Bucephalus Hodge, a mysterious and influential figure within Oxford’s academic world. Adding intrigue and skill to the mix is Princess Gulun Shou’an (Zine Tseng), a highly intelligent martial artist with her own hidden agenda.

Also Read: Young Sherlock OTT release date in India: When and where to watch Hero Fiennes Tiffin as teenage Sherlock Holmes?

Young Sherlock FAQs:

Q. Where can I watch Young Sherlock?

A. Young Sherlock series is now streaming on Prime Video.

Q. Who plays the young Sherlock Holmes?

A. Hero Fiennes Tiffin has been cast as teenage Sherlock Holmes.

Q: Is Young Sherlock based on a book?

A: Yes. Young Sherlock (2026) is adapted from Andrew Lane's Young Sherlock Holmes book from 2010.

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