Sherlock Holmes is officially back — but with a bit of a twist. Prime Video has released the first trailer for Young Sherlock, Guy Ritchie’s long-anticipated return to the world of gritty, underground Victorian London and the boy wonder himself, Sherlock Holmes, and it’s exactly the kind of kinetic, stylish chaos you’d expect. The eight-episode series premieres March 4, 2026, with all episodes dropping at once on Prime Video in more than 240 countries and territories worldwide.

Starring Hero Fiennes Tiffin (After) as a disgraced, green, inexperienced and emotionally volatile young Sherlock Holmes, the series reimagines the legendary detective long before Baker Street, pipe-smoking, or polished genius. So basically it’s angry boy genius who finds his way but with rough edges. Sounds like fun. The logline is as follows:

With all the wit and charm of Guy Ritchie’s Sherlock Holmes feature films, Young Sherlock follows the origin story of Sir Arthur Conan Doyle’s beloved detective in an explosive re-imagining of this iconic character’s early days. Sherlock Holmes is a disgraced young man – raw and unfiltered – when he finds himself wrapped up in a murder case that threatens his liberty. His first ever case unravels a globe-trotting conspiracy that changes his life forever. Unfolding in 1870s Oxford and adventuring abroad, the series will expose the early antics of the anarchic adolescent who is yet to evolve into Baker Street’s most renowned resident.

If you loved the speed, attitude, and punch of Ritchie’s Robert Downey Jr. movies, this feels very much cut from the same cloth — just younger, meaner, and more chaotic.

Who Stars In ‘Young Sherlock’?

The cast of Young Sherlock is led by Hero Fiennes Tiffin (After franchise) as a young Sherlock Holmes, alongside Dónal Finn (The Wheel of Time), Zine Tseng (3 Body Problem), Joseph Fiennes (The Handmaid’s Tale, Shakespeare in Love), Natascha McElhone (Halo, Californication), Max Irons (Condor, The White Queen), and Colin Firth (The King’s Speech, Pride & Prejudice). Ritchie directs the first two episodes and serves as an executive producer, ensuring the series opens with his signature swagger, while the show is created for television and run by Matthew Parkhill, who also executive produces.

Additional producers include Dhana Rivera Gilbert, Marc Resteghini, Simon Maxwell, Ivan Atkinson, Simon Kelton, and Colin Wilson, with Harriet Creelman and Steve Thompson serving as co-executive producers.

Young Sherlock premieres March 4, 2026, exclusively on Prime Video.

via Collider