Guy Ritchie's highly anticipated mystery series, Young Sherlock, has made an immediate impact on Prime Video, quickly climbing to the #1 spot in the U.S. and 16 other countries and territories. The eight-episode series, which premiered globally on March 4, 2026, became an instant binge-watching hit for the streaming platform.

The show stars Hero Fiennes Tiffin as a 19-year-old Sherlock Holmes navigating his formative years at Oxford University. Directed by Ritchie, who also serves as an executive producer, the series delves into the iconic detective's origin story, exploring his very first major case and his early, intriguing relationship with James Moriarty, played by DĂłnal Finn. This fresh take on the character is inspired by Andrew Lane's Young Sherlock Holmes book series.

Critics and audiences alike have largely embraced the new mystery drama. As of March 5, 2026, Young Sherlock holds an 81% critic score on Rotten Tomatoes and a 79% audience score, with reviewers praising its energetic performances and inventive storytelling. It's important to note that this series is a standalone adaptation and is not connected to Ritchie's previous Sherlock Holmes films starring Robert Downey Jr.