Young Sherlock: Release date, OTT platform, cast, plot, and more about Hero Fiennes Tiffin's mystery series

Young Sherlock is an upcoming mystery series. It is adapted from Andrew Lane's Young Sherlock Holmes book from 2010.

Hero Fiennes Tiffin as Young Sherlock

Young Sherlock is an upcoming series. Guy Ritchie-directed action-adventure mystery follows the story of a rebellious Sherlock Holmes (Hero Fiennes Tiffin) at Oxford. As the release date nears, here's everything you need to know about Young Sherlock.

When and where to watch Young Sherlock?

Young Sherlock will be released on Amazon Prime Video on March 4, 2026. Subscribers of OTTplay Premium can also watch it with a top-up option. It has 8 episodes in total.

What's the plot of Young Sherlock?

Adapted from Andrew Lane's Young Sherlock Holmes book from 2010, Young Sherlock stars Hero Fiennes Tiffin (the After star) as a 19-year-old, raw, and undisciplined Sherlock Holmes at Oxford University. His first murder case quickly turns into a global conspiracy, propelling him on a relentless pursuit that shapes his rise to legendary status.

Set in the 1870s, a 19-year-old disgraced and unfiltered Sherlock finds himself in trouble at Oxford University. He is implicated in a murder case, forcing him to solve his first mystery to protect his freedom. The investigation delves into a "global conspiracy" that shapes his future, including his initial encounter with the mysterious James Moriarty.

Who plays what in Young Sherlock?

In Young Sherlock, Hero Fiennes Tiffin stars as a young Sherlock Holmes. He is drawn into a deadly global conspiracy on his first murder case, facing Dónal Finn’s James Moriarty, the influential Sir Bucephalus Hodge (Colin Firth), and navigating family intrigue with Joseph Fiennes and Natascha McElhone as his parents, Max Irons as Mycroft, and Zine Tseng as the powerful Princess Gulun Shou’an.

Meanwhile, Guy Ritchie is the director and executive producer of the 2026 Prime Video series Young Sherlock.

Inspired by Andrew Lane’s books, Young Sherlock will show the young detective learning martial arts from a Chinese tutor and mastering the violin. It also imagines Holmes and Watson's first meeting at a London boarding school, where their friendship sparks a lifetime of mystery-solving together.

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 arriving on Amazon Prime Video on March 4, 2026.

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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