[s15e18] Underworld 2 Apr 2026

: The Doctor discovers troglodytes working in a nebula's core full of caves, overseen by men who use "fumigation" as a means of control.

: The society is controlled by "The Seers," who value radioactive energy over human life. [S15E18] Underworld 2

Reports on the episode's quality are mixed, often highlighting the ambitious story vs. the limited production budget of the time: : The Doctor discovers troglodytes working in a

: You can find this classic episode on streaming platforms like Apple TV or Tubi . the limited production budget of the time: :

The code refers to Part Two of the 1978 Doctor Who serial titled " Underworld ". This episode is the 18th in the show's 15th season and features the Fourth Doctor, played by Tom Baker. Plot Overview

: Critics generally find Part Two to be the weakest segment, describing it as "extremely dull" with roughly 20 minutes of "walking around and gas".

: This is distinct from the 2006 film Underworld: Evolution , which is also sometimes colloquially called " Underworld 2 ". "Doctor Who" Underworld: Part Two (TV Episode 1978) - IMDb