Episode 4: Episode 4
Release Date
Mar 04, 2026
Genre
Adventure, Action, Mystery, Thriller
Network
Prime Video
Language
British English
Episode Summary
A scary giant monster is causing chaos in London! Everyone is terrified, but young Sherlock isn't afraid. He uses his sharp mind and keen eyes to investigate, discovering that things aren't always what they seem. Can Sherlock uncover the truth behind the monstrous threat and save the city with his clever deductions, proving that brains can conquer any challenge?
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Cast & Crew
Young Sherlock S1E4:
Matthew Parkhill
Executive Producer
Hero Fiennes Tiffin
Actor
Dónal Finn
Actor
Zine Tseng
Actor
Joseph Fiennes
Actor
Natascha McElhone
Actor
Max Irons
Actor
Colin Firth
Actor
Guy Ritchie
Executive Producer
Dhana Rivera Gilbert
Executive Producer
Marc Resteghini
Executive Producer
Simon Maxwell
Executive Producer
Ivan Atkinson
Executive Producer
Simon Kelton
Executive Producer
Colin Wilson
Executive Producer