Where can I watch “Sherlock” Season 4 Episode 1 online?

This page provides episode info and a legal-only guide. It does not host streams or downloads. Check official platforms and licensed services for availability in your region (US first).

Do I need to watch earlier episodes before “Les six Thatcher”?

Watching earlier episodes in season 4 helps you follow the plot and character arcs leading into this episode.

Watch Sherlock Season 4 Episode 1 Online

“Les six Thatcher” — Watch "Sherlock" Season 4 Episode 1 online in HD for free. Check streaming providers, cast, and episode details.

Jan 1, 2017 Season 4 Episode 1 89 min 15

6.9 ★ ★ ★ ★ ★

198 votes

Sherlock Season 4

← Back TV Series

Where can I watch "Les six Thatcher" online?

You can watch it through the button below, and it is free.

▶ Watch This Episode Now

Season 4 Episode 1 — Aired on Jan 1, 2017 • runs about 89 minutes.

Directed by Rachel Talalay.

Written by Mark Gatiss.

Notable cast/guest names in this episode include Benedict Cumberbatch, Martin Freeman.

This page includes 6 official still(s) (when available) plus legal availability links.

Looking for “watch Sherlock Season 4 Episode 1 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.

Synopsis

Avec le retour de Moriarty annoncé à travers Londres, le gouvernement britannique décide de blanchir Sherlock Holmes de la mort de Charles Augustus Magnussen. De retour à Baker Street et alors que John et Mary Watson deviennent parents, le détective attend le prochain coup du criminel. L'affaire étrange de la mort d'un adolescent va mener Sherlock Holmes sur la piste d'un homme traquant une série de bustes de Margaret Thatcher.