A Cunning New Series From Guy Ritchie: Prime Video Releases Trailer and Key Art for Young Sherlock

Sherlock Holmes before Baker Street and before the legend. 

Prime Video has released the official trailer and key art for Young Sherlock, a bold new series from Guy Ritchie starring Hero Fiennes Tiffin as the iconic detective in his earliest and most reckless years.

Packed with action, mystery, and a fresh rivalry with James Moriarty, Young Sherlock reimagines how the world’s greatest detective found his instincts and edge. All eight episodes premiere on March 4, 2026 exclusively on Prime Video. Ready to meet Sherlock before he became a legend?

Guy Ritchie directs and executive produces, Hero Fiennes Tiffin stars as Sherlock Holmes

All eight episodes of the series will premiere exclusively on Prime Video on March 4, 2026

Prime Video debuted the official trailer and key art for Young Sherlock, starring Hero Fiennes Tiffin (After series) as Sherlock Holmes. From visionary director Guy Ritchie, Young Sherlock is an irreverent, action-packed mystery that charts the legendary origin story of the world’s greatest detective. All eight episodes of the series will premiere on March 4, 2026, exclusively on Prime Video in more than 240 countries and territories worldwide.

When a charismatic, youthfully defiant Sherlock Holmes meets none other than James Moriarty, he finds himself dragged into a murder investigation that threatens his liberty. Sherlock's first ever case unravels a globe-trotting conspiracy, leading to an explosive showdown that alters the course of his life forever. Unfolding in a vibrant Victorian England 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.

Previously announced cast members of Young Sherlock include Dónal Finn (The Wheel of Time), Zine Tseng (3 Body Problem), Joseph Fiennes (The Handmaid’s Tale), Natascha McElhone (Halo), Max Irons (Condor) and Colin Firth (The King’s Speech). Guy Ritchie directs the first two episodes and executive produces. The series is created for television and executive produced by showrunner Matthew Parkhill with executive producers Dhana Rivera Gilbert, Marc Resteghini, Simon Maxwell, Ivan Atkinson, Simon Kelton, Colin Wilson, and co-executive producers Harriet Creelman and Steve Thompson. Motive Pictures led physical production for Young Sherlock.