The Mutant Phase (audio story)

 was the fifteenth audio story of Big Finish's Doctor Who monthly range and the third part of their "Dalek Empire" semi-linked stories.

Publisher's summary
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...

Plot
to be added

Cast

 * The Doctor - Peter Davison
 * Nyssa - Sarah Sutton
 * Professor Ptolem - Christopher Blake
 * Commander Ganatus - Jared Morgan
 * Albert - Andrew Ryan
 * Delores - Sara Wakefield
 * The Daleks - Alistair Lock, Nicholas Briggs
 * Professor Karl Hendryk - Mark Gatiss

Daleks

 * There are many references to the Dalek invasion and occupation of Earth in the 22nd century.
 * The Daleks use Robomen on Earth.
 * The Daleks count in Rels.

Races and species

 * Nyssa compares wasps on Earth to Line Grove Wasps that were on Traken.
 * In the alternative timeline, the Thals provide the survivors on Earth with food.

TARDIS

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

Theories and concepts

 * 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

 * When the TARDIS arrives, it hits a bump in the time track and is drawn down a time corridor.
 * Skaro is destroyed (in an alternative timeline).
 * The Daleks have time corridor technology.

Continuity

 * This story takes place in an altered future after the events of DW: The Dalek Invasion of Earth.
 * The Dalek Emperor transfers himself in a fashion similar to Susan Mendes' in BFDE: Dalek War: Chapter One.
 * Nyssa refers to the events of BFA: The Land of the Dead.
 * The idea of the TARDIS jumping a time track was first seen in DW: The Space Museum.
 * Commander Ganatus and the Starship Dyoni are named after Thal characters from DW: The Daleks.
 * Nyssa would later encounter the Daleks once again in Stockbridge during the 45th century. (BFA: Plague of the Daleks)

For the Doctor

 * The Mutant Phase occurs after BFA: Winter for the Adept
 * The Mutant Phase occurs before BFA: Primeval

For the Daleks

 * The Mutant Phase occurs after BFA: The Apocalypse Element
 * The Mutant Phase occurs before BFA: The Time of the Daleks