Overview
- All eight episodes will release simultaneously on Prime Video in more than 240 countries and territories.
- Hero Fiennes Tiffin leads as Sherlock Holmes with Dónal Finn as James Moriarty, alongside Zine Tseng, Joseph Fiennes, Natascha McElhone, Max Irons and Colin Firth.
- The official logline follows a disgraced young Holmes at Oxford whose first investigation expands into a globe‑spanning conspiracy.
- Guy Ritchie serves as executive producer and directs the first two episodes, with Motive Pictures leading physical production.
- Showrunner Matthew Parkhill says the story reimagines Holmes and Moriarty as friends at Oxford and stays within pre–Conan Doyle canon while planting future‑facing Easter eggs.