Young Sherlock, the origin story series from director Guy Ritchie, premieres on Amazon Prime Video on March 4, 2026, with all eight episodes dropping at once across 240 countries and territories. Hero Fiennes Tiffin stars as a 19-year-old Sherlock Holmes at Oxford University, long before Baker Street and the deerstalker, navigating his very first murder case alongside a young James Moriarty. The series marks Ritchie’s return to the Holmes universe following his two feature films with Robert Downey Jr.
When Is Young Sherlock Releasing on Prime Video?
Young Sherlock premieres on Amazon Prime Video on March 4, 2026. All eight episodes of Season 1 release simultaneously, meaning subscribers can watch the full first season in one sitting or at their own pace from day one. The series goes live globally across Prime Video’s footprint in more than 240 countries and territories, making it one of the platform’s wider international launches of 2026. No regional release time differences have been announced, though Prime Video typically rolls out major premieres at midnight Pacific Time.
What Is Young Sherlock About?
Young Sherlock is set in Victorian England and follows a charismatic, rebellious 19-year-old Sherlock Holmes during his time at Oxford University. When a murder occurs on campus and Holmes finds himself implicated alongside scholarship student James Moriarty, the two improbable partners are forced to team up to prove their innocence. What begins as a single campus murder quickly spirals into a globe-trotting conspiracy that reaches the highest levels of government, culminating in a confrontation that the series positions as the event that shapes Holmes into the detective the world comes to know.
The series is based on Andrew Lane‘s Young Sherlock Holmes book series, itself a pastiche of Arthur Conan Doyle‘s original canon, and it leans into the adventure and action elements of the source material. Guy Ritchie‘s stylistic sensibility — kinetic, propulsive, with a strong visual sense of Victorian texture — runs through the production, particularly across the first two episodes which he directed personally. The show is not a reimagining of Holmes as a modern figure but a period origin story that builds toward the familiar mythology while standing entirely on its own as an eight-episode thriller.
Who Stars in Young Sherlock?
Hero Fiennes Tiffin leads the series as the young Sherlock Holmes, bringing a defiant, intellectually restless energy to a character audiences typically encounter in his fully formed, imperious state. Fiennes Tiffin, best known for the After franchise, makes a striking tonal pivot here, playing someone whose genius is present but whose discipline is not yet in place. Opposite him, Dónal Finn — who appeared in The Wheel of Time — plays James Moriarty, and early critical notices have called his performance a series highlight, playing Moriarty as an intellectual equal to Holmes rather than a straightforward villain.
The supporting cast carries significant weight. Colin Firth, Joseph Fiennes, and Natascha McElhone anchor the adult roles, with Max Irons and Zine Tseng — known from 3 Body Problem — rounding out the ensemble. The combination of emerging talent in the lead roles and established character actors in the surrounding cast gives the series a depth that its thriller premise alone might not have sustained across eight episodes.
Who Is Behind Young Sherlock?
Guy Ritchie directs the first two episodes and serves as executive producer across the full season, lending the series the cinematic authority his involvement implies. He previously directed Sherlock Holmes (2009) and Sherlock Holmes: A Game of Shadows (2011) for Warner Bros., establishing a track record with the Holmes universe that makes Young Sherlock a natural extension of his long-term affinity for the character. The series is showrun and written by Matthew Parkhill, who also executive produces, and is produced through Amazon MGM Studios.
Where Can You Watch Young Sherlock?
Young Sherlock streams exclusively on Amazon Prime Video from March 4, 2026. In India, it is available through Prime Video India as part of a standard Prime membership. The series launches with all eight Season 1 episodes available simultaneously, and given the volume of critical attention the show is already attracting ahead of its premiere — including a strong notice from Variety calling it a “perfect origin story” — it is among the more anticipated international streaming arrivals of early 2026.