Watch Young Sherlock Season 1 Episode 4 Online
“L'Affaire du bouton manquant” — 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 retourne dans la maison familiale à la recherche de réponses.
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.
