It is the missing sixth serial of the fifth season of Doctor Who, which was the first broadcast in six weekly parts from March to April 1968. The story concerns a colony of sentient, parasitic seaweed, last seen in the eighteenth century, returning to attack several gas installations in the North Sea in an attempt to take over humanity.
General Note: English dialogue.Special features: Audio commentary; Production subtitles; Surviving footage; Behind the scenes footage; Episode reconstructions; "The cruel sea - surviving fury from the deep"; Photo gallery; Teaser trailer; and more.Originally broadcast in six parts from March to April 1968.Title from disc surface.English subtitles for the deaf and hard of hearing (SDH).
Participant or Performer Note: Patrick Troughton, Frazer Hines, Deborah Watling, Victor Maddern, Roy Spencer.