Doctor Who: Vortex Ice/Cortex Fire

Production details

  • Format
  • 2 × 60 min audio plays
  • Production company
  • Big Finish Productions
  • Recording studio
  • Moat Studios
  • Dates recorded
  • 16 & 21 Nov 2016
  • Date released
  • May 2017
  • Written by
  • Jonathan Morris
  • Ian Potter
  • Directed by
  • Ken Bentley
  • Sound design
  • Joe Kraemer & Josh Arakelian
  • Music
  • Joe Kraemer
  • Producer
  • David Richardson
  • Script editor
  • Alan Barnes
  • Executive producers
  • Jason Haigh-Ellery
  • Nicholas Briggs
  • Cover art
  • Simon Holub


  • The Doctor
  • Colin Baker
  • Flip
  • Lisa Greenwood
  • Sai Chopra
  • Shobu Kapoor
  • Dylan Argent
  • Orlando Seale
  • Jannik Woolf
  • Monty D’Inverno
  • Khoralla
  • Rebecca Todd
  • Halus
  • Simon Kane
  • Bav
  • Cortex
  • Enforcer
  • Eve Webster
  • Holly Whitfield
  • Katherine Senior
  • Dakeem
  • Ambulance Pilot
  • Youssef Kerkour


Vortex Ice

Written by Jonathan Morris

In search of ‘exotic particles’, the Doctor and Flip arrive 700 feet underground, in a mine in Northern Mexico – only to run into a scientific expedition. Among their number, an exobiologist. They’re all on the hunt for alien life! Deep underground, the team finally uncovers a cave of vast crystals – like ice, despite the heat. And inside the crystal: something frozen. Something trapped in time. If only it were something simple, like a monster. But it’s far, far worse than that.

Cortex Fire

Written by Ian Potter

The Doctor brings Flip to the futuristic city of Festin, the best vantage point to witness a unique astronomical light show. In a city governed by the all-powerful network known as the Cortex, they’re soon identified as outsiders – nihilists, perhaps, responsible for a wave of terror that’s been sweeping the city… But the truth is different. The people of Festin are burning up. Spontaneously combusting. And no-one knows why.