[s15e18] Underworld 2 -

: 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 [S15E18] Underworld 2

: The society is controlled by "The Seers," who value radioactive energy over human life. : Critics generally find Part Two to be

: This serial is notorious for its heavy use of Color Space Overlay (CSO) , a primitive green-screen technique, to create the cave settings. Reviewers from IMDb note that while the lasers and some CSO effects work, others look "simply awful". a primitive green-screen technique