The Mutant Phase

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The Mutant Phase
Big Finish Productions audio drama
Series	Doctor Who
Release no.	15
Featuring	Fifth Doctor Nyssa
Written by	Nicholas Briggs
Directed by	Nicholas Briggs
Produced by	Gary Russell Jason Haigh-Ellery
Executive producer(s)	Jacqueline Rayner
Production code	6CC
Length	2 hrs, 1 min
Release date	December 2000
Preceded by	The Holy Terror
Followed by	Storm Warning

The Mutant Phase is a Big Finish Productions audio drama based on the long-running British science fiction television series Doctor Who. It forms the third serial in the Dalek Empire arc, following on from events in The Genocide Machine and The Apocalypse Element. The arc concludes in The Time of the Daleks. This audio drama is based on an earlier Audio Visuals story of the same name.

A director's cut of the first episode was included with the Doctor Who Magazine bonus CD story Cuddlesome.