One of the biggest streaming releases in the first few months of the 2026 TV schedule was Young Sherlock, starring Hero Fiennes Tiffin as the future world’s greatest detective and Dónal Finn as James Moriarty, a.k.a. Sherlock’s future nemesis. The show had a lot going for it, immediately breaking a record with the trailer and rocketing to become the #1 show on Prime Video after releasing in early March.
Now, nearly a month later, Prime has given the show another big push to show off the dynamic built by the two stars, who shared the story behind their chemistry read.
