Guy Ritchie is having a banner year in 2026, and his hit Prime Video series Young Sherlock is already stacking its second season with some serious talent. Fresh off the success of its first batch of mysteries, which debuted in March to strong reviews and dominated the streaming charts through spring, the show is adding a quartet of new faces—including two familiar ones from Westeros.
Deadline reports that Indira Varma and Aidan Gillen, both beloved for their roles on Game of Thrones, are among the first new cast members for Season 2. They'll be joined by Olivia Williams, who recently appeared in Monster: The Ed Gein Story and Dune: Prophecy, and Sophie Skelton, known for her work on Outlander. The quartet will weave into the show's already rich ensemble, which includes returning stars Hero Fiennes Tiffin as the young detective, Dónal Finn as his rival James Moriarty, and Natascha McElhone, Max Irons, and Holly Cattle as Holmes' family.
Ritchie's signature blend of sharp wit, stylish action, and period intrigue made Young Sherlock an instant hit. The series reimagines the iconic detective as a brilliant but reckless young man, navigating both crime and family drama in 19th-century London. With the new additions, Season 2 promises to deepen the web of alliances and rivalries that made the first season so addictive.
This casting news comes as Ritchie's television empire expands rapidly. His Netflix series The Gentlemen returns for a second season on September 3, and the sophomore outing of MobLand, starring Tom Hardy, is set to premiere on Paramount+ shortly after. On the big screen, Ritchie's action thriller In the Grey—featuring Henry Cavill, Jake Gyllenhaal, and Eiza González—finally hit theaters after delays, and his satire Wife and Dog, with Benedict Cumberbatch and Rosamund Pike, is slated for an October release.
For fans of Game of Thrones, seeing Varma and Gillen reunite in a new project is a treat. Varma played Ellaria Sand in the HBO epic, while Gillen portrayed the scheming Littlefinger. Their addition to Young Sherlock signals that Season 2 will lean even harder into the political and personal betrayals that Ritchie excels at. If you're looking to brush up on your Westeros lore, check out our guide to the Targaryen family tree for context on the world these actors helped build.
Prime Video has not yet announced a premiere date for Young Sherlock Season 2, but production is underway. With Ritchie's current hot streak, expect more details soon. In the meantime, catch up on the first season if you haven't—it's a masterclass in how to reinvent a classic character for a modern audience.
