There’s something mildly perverse about taking the most over-adapted detective in pop culture and rewinding him to the moment before the myth sets like cement—before Baker Street, before the pipe-and-patch iconography, before the pose becomes a personality. But Prime Video just did precisely that, debuting the trailer and key art for “Young Sherlock,” with Guy Ritchie (“Sherlock Holmes,” “The Gentlemen”) steering the first two episodes and Hero Fiennes Tiffin (the “After” series) stepping into the deerstalker-in-waiting ahead of the show’s March 4, 2026, premiere.
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The setup is straightforward, even if the show wants to play it a little sideways: a charismatic, youthfully defiant Sherlock crosses paths with James Moriarty and gets pulled into a murder investigation that puts his freedom at risk. From there, his first case escalates into a globe-trotting conspiracy and an eventual showdown that “alters the course of his life,” unfolding in Victorian England and beyond as the series sketches the early shape of the legend before the Baker Street version calcifies into myth.
Alongside Tiffin, the previously announced ensemble includes Dónal Finn as Moriarty, plus Zine Tseng, Joseph Fiennes, Natascha McElhone, Max Irons, and Colin Firth.
Behind the camera, the series is created for television and executive produced by showrunner Matthew Parkhill, with additional executive producers including Dhana Rivera Gilbert, Marc Resteghini, Simon Maxwell, Ivan Atkinson, Simon Kelton, and Colin Wilson, alongside co-executive producers Harriet Creelman and Steve Thompson. Motive Pictures led physical production.
“Young Sherlock” premieres March 4 on Prime Video. Does this mean Ritchie will be gearing up to do “Sherlock Holmes 3” with Robert Downey Jr. and Jude Law one day? Stick a pin in that one for now and just enjoy the trailer below.
