When the TARDIS lands in a quarry on Earth, Sarah unearths what appears to be a fossilised hand, buried in one-hundred-fifty-million-year-old strata. Analysis shows the hand to be silicon-based and inert, but when Sarah begins to act as if possessed, the Doctor suspects that it may still be alive...

• DirectorLennie Mayne
• Release23 October 1976
• Genre
  Science Fiction / Drama
• Duration1h 40m
• Budget?
• Revenue?
• Rate
  

  7.5
  6 reviews
• Productions

  BBC