Prime Video released the first teaser for Young Sherlock on December 18, 2025, announcing that all eight episodes will premiere on March 4, 2026. The streaming service said the series will launch exclusively on Prime Video in more than 240 countries and territories.
Hero Fiennes Tiffin stars as Sherlock Holmes, with Guy Ritchie directing the first two episodes and serving as executive producer. Ritchie previously directed Sherlock Holmes (2009) and Sherlock Holmes: A Game of Shadows (2011).
Prime Video’s synopsis describes Holmes as a disgraced young man drawn into a murder case that threatens his freedom. Set in 1870s Oxford and extending abroad, the story follows his first investigation as it uncovers a global conspiracy. The series explores the detective’s early life before he becomes the established figure associated with Baker Street.
The series is based on Andrew Lane’s Young Sherlock Holmes novels. Matthew Parkhill created it for television and serves as showrunner and executive producer.
The cast also includes Dónal Finn, Zine Tseng, Joseph Fiennes, Natascha McElhone, Max Irons and Colin Firth.
