The Zygon Invasion (TV story)

 was the seventh episode of the ninth series of Doctor Who produced by BBC Wales.

Synopsis
A race of shapeshifting aliens, the Zygons, have been living on Earth in secret, until now!

The Doctor, Clara and UNIT must scatter across the world in a bid to rescue Osgood from a rogue Zygon gang. And can the Doctor save the world once more, or is it all too late?

Plot
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Cast

 * The Doctor - Peter Capaldi
 * Clara - Jenna Coleman
 * Osgood - Ingrid Oliver
 * Kate Stewart - Jemma Redgrave
 * Jac - Jaye Griffiths
 * Claudette - Cleopatra Dickens
 * Jemina - Sasha Dickens
 * Colonel Walsh - Rebecca Front
 * Little Boy - Abhishek Singh
 * Little Boy's Mum - Samila Kularatne
 * Hitchley - Todd Kramer
 * Lisa - Jill Winternitz
 * Norlander - Gretchen Egolf
 * Hitchley's Mom - Karen Mann
 * Walsh's Son - James Bailey
 * Zygons - Aidan Cook, Tom Wilton, Jay Parker

Uncredited

 * Bonnie - Jenna Coleman
 * Voice of the Zygons - Nicholas Briggs

Crew
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Zygons
After the Human-Zygon peace treaty, seen in TV: The Day of the Doctor it is revealed that 20 million Zygons were relocated around the United Kingdom. It quickly became clear that these Zygons had seized control of the UK and had slowly spread across the entire globe.

Story notes
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Ratings

 * BBC One: to be added

Filming locations
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Production errors
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Continuity

 * The human/Zygon treaty is referenced (TV: The Day of the Doctor) Since then, a version of Osgood has died. (TV: Death in Heaven)
 * Kate mentions a previous attempt at invasion by the Zygons which occured in the 1970s or 1980s. (TV: Terror of the Zygons)
 * Kate still confuses the UNIT timelines. (TV: The Day of the Doctor)
 * Osgood reminds the Doctor that he used to wear a lot of question marks on his clothes (TV: Planet of Fire-Survival) when he comments on her question mark jumper, an allusion to his seventh incarnation. (TV: Time and the Rani)
 * A weapon called the ZX-7, confiscated by the Doctor, was invented by Harry Sullivan shortly after he left the Fourth Doctor. (TV: Terror of the Zygons)
 * Clara is kidnapped by the Zygons and replaced with a Zygon duplicate called Bonnie. This is the second occasion that a companion or assailant of the Doctor has been copied by a Zygon (TV: The Day of the Doctor)

DVD releases
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Blu-ray releases
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