Doctor Who: The Seeds of Doom

When scientists in the Antarctic uncover a mysterious seed pod, the Doctor is called in to investigate. He soon realises it is extraterrestrial and extremely dangerous. At the same time, however, ruthless millionaire plant-lover Harrison Chase has learned of the find and decides he must have the pod for his collection of rare and beautiful flora. Meanwhile the pod itself harbours intelligent life with sinister plans of its own...

• 
  Tom Baker

  The Doctor
• 
  Elisabeth Sladen

  Sarah Jane Smith
• 
  Tony Beckley

  Harrison Chase
• 
  John Challis

  Scorby
• 
  Mark Jones

  Arnold Keeler / Krynoid (voice)
• 
  Alan Chuntz

  Chauffeur
• 
  Pat Gorman

  Guard