Peri and the Piscon Paradox (audio story)

 was the seventh release of the fifth series of The Companion Chronicles produced by Big Finish Productions. It was also the first Companion Chronicles release to feature an actor who played the Doctor, with Colin Baker playing his role of the Sixth Doctor, however Nicola Bryant provides narration as well as the Fifth Doctor's dialogue.

Synopsis
The Doctor and Peri journey to Los Angeles 2009 to do battle with a Piscon. His name is Zarl, and he's a fish of utmost evil.

Zarl is going to steal all the water of Earth and sell it to the highest bidder. Or blow up the San Andreas fault. Or the planet. Or something like that. He's a bit vague on that point.

Fortunately, to stop him there’s help from an unexpected source: a future version of Peri. She knows Zarl's dark secret.

But should the future Peri be on Earth at all? Something smells fishy – and it's not just Zarl.

Plot
to be added

Cast

 * Peri Brown - Nicola Bryant
 * Sixth Doctor - Colin Baker
 * Carburetor - Nicola Bryant

Cultural references

 * Upon seeing her older self for the first time, the young Peri wonders if she is an actress who used to play the Fonz's girlfriend in Happy Days or a "green good time girl" in Star Trek.
 * The older Peri tells her younger self that she is in the employ of a secret government organisation known as the X-Files. The younger Peri, being from 1984, is totally unaware that The X-Files is in actuality a science fiction television series and takes her at her word. The Fifth Doctor is familiar with the series, however, and comments that it was never as good after David Duchovny left. He commends the older Peri for her quick thinking and for not revealing anything to her younger self about her personal future.

Individuals

 * Peri's parents, Janine and Paul Brown, were married on 21 November 1962.

Species]

 * The Fifth Doctor refers to the Pescatons, whom he claims are more violent than the Piscons.
 * In an attempt to jog the older Peri's memories, the Sixth Doctor mentions Sil, the Tractators, the Ice Warriors and Davros.

Theories and concepts

 * Both the Fifth and Sixth Doctors mention the Blinovitch Limitation Effect.

Continuity

 * The Fifth Doctor refers to the Pescatons they first appeared in the only Fourth Doctor radio play AG: Doctor Who and the Pescatons.
 * The younger Peri wonders if her mother is still alive in 2009, this is explored in BFA: The Reaping.
 * In an attempt to jog the older Peri's memories, the Sixth Doctor mentions Sil (DW: Vengeance on Varos, BFA: Mission to Magnus, DW: Mindwarp), the Tractators (BFA: The Hollows of Time), the Ice Warriors (BFA: Mission to Magnus) and Davros (DW: Revelation of the Daleks).
 * The older Peri remembers her first encounter with the Doctor involving a "robot with an identity crisis", "some religious types" and a "crazy guy with a beard". (DW: Planet of Fire)
 * The Sixth Doctor remembers his previous incarnation and the younger Peri encountering the older version of Peri defeating Zarl in Los Angeles in 2009.
 * The Sixth Doctor refers to Jamie McCrimmon and Zoe Heriot being returned to their native eras by the Time Lords with no memory of their adventures with his second incarnation, aside from their respective first encounters with him. (DW: The War Games)

For the Fifth Doctor and Young Peri

 * Peri and the Piscon Paradox takes place after PDA: Warmonger
 * Peri and the Piscon Paradox takes place immediately before DW: The Caves of Androzani

For the Sixth Doctor

 * Peri and the Piscon Paradox takes place after BFA: Her Final Flight
 * Peri and the Piscon Paradox takes place before BFA: I.D.

For the Older Peri

 * Peri and the Piscon Paradox takes place 25 years after DW: Planet of Fire