Young Sherlock: Start date, cast interviews, and everything you need to know
From Guy Ritchie, Young Sherlock is coming to Prime Video next month and it's going to be your new obsession.
Young Sherlock is coming and you’re going to love it!
New Prime Video series Young Sherlock is coming this March. The critics love it, and it’s going to be your new obsession!
To satisfy your excitement, we’ve pulled together everything you need to know about it and some brand new interviews with its star, Hero Fiennes!
What is Young Sherlock about?
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.
Who is in the cast?
The series stars Hero Fiennes Tiffin (After series) as Sherlock Holmes. 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.
Are there cast interviews?
Yes! New ones just release today! Watch them here...
Is there a trailer?
Yep, watch it here....
How many episodes are there?
Season one has eight episodes, expected to be an hour long.
When does Young Sherlock come to Prime Video?
Young Sherlock arrives on Prime Video on 4 March, 2026.



