Overview
- All eight episodes debut March 4, 2026, streaming simultaneously in 240+ countries and territories on Prime Video.
- The new trailer introduces a rebellious student Sherlock whose first case entangles him with James Moriarty and a globe‑spanning conspiracy.
- Hero Fiennes Tiffin leads the cast, joined by Dónal Finn, Zine Tseng, Joseph Fiennes, Natascha McElhone, Max Irons, and Colin Firth.
- Guy Ritchie serves as executive producer and directs the first two episodes, with Matthew Parkhill as showrunner and Motive Pictures handling production.
- The project draws on Andy Lane’s Young Sherlock Holmes novels and Conan Doyle’s characters, and coverage notes inconsistent reports on how many episodes Ritchie directed.