Watch The War Between the Land and the Sea Season 1 Episode 3 Online
“The Deep” — Watch "The War Between the Land and the Sea" Season 1 Episode 3 online in HD for free. Check streaming providers, cast, and episode details.
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Season 1 Episode 3 — Aired on Dec 14, 2025 • runs about 45 minutes.
Directed by Dylan Holmes Williams.
Written by Pete McTighe.
Notable cast/guest names in this episode include Russell Tovey, Gugu Mbatha-Raw, Jemma Redgrave, Ruth Madeley.
This page includes 2 official still(s) (when available) plus legal availability links.
Looking for “watch The War Between the Land and the Sea Season 1 Episode 3 online”? This is a legal-only guide with synopsis, stills, and navigation for this season.
Synopsis
Barclay makes a terrifying descent into the world of Homo Aqua. Back on the land, Kate stands alone as Downing Street conspires with the army to change the course of the war.
Stills
Cast
as Barclay Pierre-Dupont
as Salt
as Kate Lethbridge-Stewart
as Shirley Bingham
Episodes – Season 1
Trailer / clip
There�s no trailer available for this series right now.
