[s15e18] Underworld 2 Apr 2026

: The story is loosely based on the Greek legend of Jason and the Argonauts , specifically their quest for the Golden Fleece, with "Underworld" serving as a sci-fi retelling of the journey to Colchis. Critical Reception & Production

Reports on the episode's quality are mixed, often highlighting the ambitious story vs. the limited production budget of the time: [S15E18] Underworld 2

: 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 : The story is loosely based on the