The Entropy Plague

The Entropy Plague

The Entropy Plague

Regular Cast

Peter Davison (The Doctor), Janet Fielding (Tegan), Sarah Sutton (Nyssa), Mark Strickson (Turlough), Catherine Skinner (Cherryanne), Pallister (Robert Duncan), John Voce (Branarack), Alistair MacKenzie (Robots)


A Great Darkness is spreading over E-Space. Entropy increases. In search of a last exit to anywhere, the TARDIS arrives on the power-less planet of Apollyon, where the scientist Pallister guards the only way out – a mysterious portal. But the portal needs power to open, and the only power Pallister can draw on is the energy contained within the molecular bonds of all living tissue…

The Doctor, Nyssa, Tegan and Turlough soon learn that neither Pallister nor his ally, the space pirate Captain Branarack, will stop at murder to ensure their escape. But they’re not the only menace on Apollyon. The Sandmen are coming – creatures that live on the life force, that live on death.

Death is the only way out into N-Space. Death, or sacrifice.

But whose death?

Whose sacrifice?

Written by: Jonathan Morris
Directed by: Ken Bentley



coming soon


  • The Entropy Plague was the 197th Big Finish Release
  • The Doctor tells Adric Traken that the TARDIS accidentally travelled through a CVE to E-Space. (Mistfall)
  • Adric Traken refers to his encounter with his mother Nyssa on Valderon one monthearlier. (Prisoners of Fate)
  • The Doctor refers to the fact that Tegan was kidnapped from Isenfel. (Equilibrium)
  • Nyssa refers to the destruction of Traken by The Master in 1981. (Logopolis)
  • The Doctor states that he is not entirely sure of Turlough’s species. (Planet of Fire)
  • The Doctor refers to the fact that he previously saw the Gateway during his fourth incarnation. (Warriors’ Gate)
  • During her farewell to The Doctor, Nyssa says “I’m needed, you know that, Doctor.” At an earlier point in her personal timeline but a later point in his, she told him that the same was true of him. (Winter, The Caves of Androzani)
  • Nyssa refers to their visit to London during the outbreak of the Bubonic plague in September 1666. (The Visitation)
  • The stars in E-Space go out as the universe dies. The same thing once happened to N-Space in an alternative timeline in which The Daleks were able to detonate the Reality Bomb. (Turn Left)
  • Tegan refers to her encounter with Alzarian spiders on Alzarius. (Mistfall)
  • Nyssa recalls the death of the Monitoron Logopolis. (Logopolis)
  • Tegan once again says, “Rabbits!” (Logopolis, Frontios, Psychodrome, The Emerald Tiger)
  • Turlough recalls their reunion with Nyssa on Helheim in 3530. (Cobwebs)
  • Nyssa’s contact with the Sandmen reverses the rejuvenation that she experienced in India on 31 December 1926. (The Emerald Tiger)
  • Nyssa refers to the Groves on Traken. (The Keeper of Traken)
  • The Doctor says he keeps a crank handle for when the TARDIS loses power. (Death to the Daleks)

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