Trailer For Guy Ritchie’s YOUNG SHERLOCK Brings Chaos, Conspiracies, and a Reckless Detective-in-Training
Prime Video has revealed the full official trailer for Young Sherlock, and it’s leaning hard into swagger, chaos, and sharp-edged mystery.
The series arrives this March and marks another return to the world that Guy Ritchie reshaped with Sherlock Holmes and A Game of Shadows. This time, the focus shifts backward to a younger, rougher version of the iconic detective, long before Baker Street and deerstalker hats became the norm.
The show is framed as an explosive re-imagining of Sherlock Holmes’ earliest days, and the trailer makes it clear this isn’t a polite origin story. Sherlock is introduced as a disgraced young man suddenly caught in a murder investigation that puts his freedom on the line.
What begins as his first real case quickly spirals into a globe-trotting conspiracy, pushing him toward a life-defining showdown that reshapes who he’ll become.
Set primarily in 1870s Oxford with detours across Europe and beyond, the series digs into the anarchic teenage years of a character who hasn’t yet sharpened his legendary discipline.
This Sherlock is impulsive, volatile, and still figuring himself out, which gives the mystery a different kind of energy. The tone clearly mirrors the wit and punch of Ritchie’s earlier Sherlock Holmes films, blending action, attitude, and puzzle-solving into something fast and playful.
The cast includes Hero Fiennes Tiffin as Sherlock Holmes, while Dónal Finn plays a young James Moriarty, setting up a rivalry that feels destined to explode. They’re joined by Zine Tseng, Joseph Fiennes, Natascha McElhone, Max Irons, and Colin Firth as Bucephalus Hodge.
The Sherlock and Moriarty dynamic looks especially fun here, teasing the beginnings of one of fiction’s most famous rivalries.
The series clearly isn’t aiming for prestige calm or dusty tradition. It’s loud, stylish, and more interested in momentum than reverence, which makes it feel closer to a high-energy adventure series than a standard period drama.
The series is created and directed by Ritchie, with Matthew Parkhill serving as showrunner and lead writer alongside Peter Harness, Francesca Lin, and KT Roberts.
The story draws inspiration from Andy Lane’s Young Sherlock Holmes novels, which themselves are based on characters created by Sir Arthur Conan Doyle.
Young Sherlock premieres on Prime Video on March 4th, 2026.