New Detective Thriller Young Sherlock Takes Over Global Streaming
Prime Video’s new detective series Young Sherlock has vaulted to the top spot worldwide within days of its debut, with Amazon MGM Studios touting a breakout global performance.
Prime Video just crowned a new detective obsession. Young Sherlock launched and immediately jumped to the top of the streamer worldwide. Amazon is already spiking the football.
Yep, it hit #1
Amazon MGM Studios publicly flagged the milestone on X, calling out the show’s global ranking and encouraging everyone to binge.
'The obsession is real. Young Sherlock is #1 on Prime Video worldwide. Stream the full series now.'
The post went up March 10, 2026.
The pitch
Created by Matthew Parkhill and developed by Peter Harness and Guy Ritchie, Young Sherlock adapts Andrew Lane’s Young Sherlock Holmes novels, which riff on and expand Arthur Conan Doyle’s iconic detective. The series dropped all eight episodes at once on March 4, 2026.
The setup is clean: 19-year-old Sherlock Holmes, still rough around the edges and studying at Oxford, gets pulled into a murder case that puts his own future at risk. Following the thread drags him into a larger, globe-spanning conspiracy. It is Holmes before the cold certainty kicked in, and Hero Fiennes Tiffin plays him as bright, impulsive, and just undisciplined enough to get in real trouble.
Cast you will recognize
- Hero Fiennes Tiffin as Sherlock Holmes
- Donal Finn as James Moriarty
- Zine Tseng as Princess Gulun Shou'an
- Max Irons as Mycroft Holmes
- Joseph Fiennes and Natascha McElhone as Sherlock’s parents
- Colin Firth as Sir Bucephalus Hodge
- Supporting: Ravi Aujla, Holly Cattle, Ian Midlane, Simon Delaney, Adam James, Rachel Shelley, Numan Acar, Scott Reid
Production notes (for the curious)
Filming kicked off in the U.K. in July 2024, with shoots in Bristol and Cardiff, then hopped to Spain for Jerez, Cadiz, and Seville. Cameras wrapped in late February 2025. That sprint from wrap to March 2026 premiere is tight but tidy.
How it is landing so far
Early critical response is solid: 83% approval on Rotten Tomatoes from 41 reviews, and a 66/100 on Metacritic from 17 critics. Add the #1 global ranking, and the show’s off to the kind of start that gets greenlights moving.
Short version: Prime Video wanted a glossy, pulpy Holmes prequel with scale, and the audience showed up. If the numbers hold, expect more of this era of Baker Street to unspool.