Doctor Who: Equilibrium

Production details

  • Format
  • 120 min audio play
  • Production company
  • Big Finish Productions
  • Recording studio
  • The Moat Studios
  • Date recorded
  • 26 & 27 Jun 2014
  • Date released
  • February 2015
  • Written by
  • Matt Fitton
  • Directed by
  • Ken Bentley
  • Sound design & music
  • Richard Fox & Lauren Yason
  • Producer
  • David Richardson
  • Executive producers
  • Jason Haigh-Ellery
  • Nicholas Briggs
  • Cover art
  • Will Brooks


  • The Doctor
  • Peter Davison
  • Nyssa
  • Sarah Sutton
  • Tegan
  • Janet Fielding
  • Turlough
  • Mark Strickson
  • Queen Karlina
  • Annette Badland
  • Balancer Skaarsgard
  • Viktor Skaarsgard
  • Nickolas Grace
  • Inger
  • Joanna Kirkland
  • Jesper
  • John Albasiny
  • Romy
  • Ella Kennion


Still looking for a way out of E-Space, the TARDIS crashes to Isenfel - a realm of snow and ice. Snarling beasts stalk the frozen plains, a feisty princess leads the hunt, and a queen in an ice palace rules over her loyal subjects. But this is no fairytale kingdom, and everyone in Isenfel knows the price of survival. While Nyssa and Tegan uncover deadly secrets hidden in the palace, Turlough flees for his life across the tundra. And as for the Doctor, he only ever wants to change things for the better. But in a world such as Isenfel, such a hope may not even be possible.

Sarah Sutton, Janet Fielding, Annette Badland, Joanna Kirkland, Mark Strickson, Nickolas Grace, Peter Davison.