Watch Young Sherlock Season 1 Episode 4 Online
“The Case of the Missing Button” — Watch "Young Sherlock" Season 1 Episode 4 online in HD for free. Check streaming providers, cast, and episode details.
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Season 1 Episode 4 — Aired on Mar 4, 2026 • runs about 50 minutes.
Directed by Anders Engström.
Written by Steve Thompson.
Notable cast/guest names in this episode include Hero Fiennes Tiffin, Dónal Finn, Zine Tseng, Natascha McElhone.
This page includes 1 official still(s) (when available) plus legal availability links.
Looking for “watch Young Sherlock Season 1 Episode 4 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.
Synopsis
Sherlock returns to his childhood home in search of answers.
Stills
Cast
as Sherlock Holmes
as James Moriarty
as Princess Gulun Shou'an
as Cordelia Holmes
as Mycroft Holmes
Episodes – Season 1
Trailer / clip
There�s no trailer available for this series right now.
