TARDIS Index File

The Mutant Phase (audio story)

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The Mutant Phase
The Mutant Phase cover
Doctor: Fifth Doctor
Companion(s): Nyssa
Main enemy: Dalek Emperor, Mutant Phase
Main setting: Kansas, 2158; London, 4253; Skaro
Key crew
Publisher: Big Finish Productions
Writer: Nicholas Briggs
Director: Nicholas Briggs
Producer: Jason Haigh-Ellery and Gary Russell
Post production: Nicholas Briggs
Cover by: Clayton Hickman
Release details
Release number: 15
Release date: December 2000
Format: 4 Episodes on 2 CDs
Production code: 6C/C
ISBN 1-903654-21-1
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Big Finish Doctor Who audio stories
The Holy Terror Storm Warning
Official trailer
The Mutant Phase
The Mutant Phase

The Mutant Phase was the fifteenth monthly Doctor Who audio story produced by Big Finish Productions and the third of their Dalek Empire semi-linked stories.

It was an early example of a non-original piece of Doctor Who fiction published by Big Finish. It was in fact a remake of an unlicensed audio drama published by Audio Visuals.

This was, according to the fictional timeline, the first performed story to feature an encounter between either the Fifth Doctor or Nyssa and the Daleks.

Publisher's summary Edit

In the 22nd century, the Daleks have occupied planet Earth. By the 43rd century, only a handful of humans survive. Still further into the distant future, a Thal scientist must choose whether to betray his heritage, or see the universe destroyed.

When the Doctor and Nyssa find themselves trapped in this deadly chain of events, they must decide who their real enemies are. What is certain, however, is that no matter where the Doctor turns... his arch enemies, the Daleks, will be waiting for him.

What could possibly be worse than that? The Mutant Phase...

Abridged release Edit

Plot Edit

to be added

Cast Edit

References Edit

Daleks Edit

Species Edit

  • Both the Thals and the Daleks count in Rels.


  • Nyssa has been repairing the TARDIS' proximity alarm.
  • The Doctor uses the HADS to move the TARDIS.

Theories and concepts Edit

  • The TARDIS is caught up in a damaged spatial temporal causal nexus point.
  • Meeting or communicating with one's past or future self is against the First Law of Time.

Time travel Edit

Notes Edit

DWA FG 124

The Doctor Who Adventures cover


An unused cover for the story, using the Dalek Emperor design from the TV Century 21 comics.

Continuity Edit

External links Edit


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