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
to be added

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 mum - Karen Mann
 * Walsh's son - James Bailey
 * Zygons - Aidan Cook, Tom Wilton, Jack Parker, Nicholas Asbury

Uncredited cast

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

Crew
to be added

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

 * The Radio Times programme listing was accompanied by a small colour shot of Osgood and the Doctor, with the accompanying caption "Doctor Who / 8.15 p.m. Osgood is snatched by aliens, prompting a round-the-world rescue mission".

Ratings

 * BBC One: 3.87m

Filming locations
to be added

Production errors
to be added

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 occurred 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: The Leisure Hive-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 fourth occasion that a companion or assistant of the Doctor has been copied by a Zygon (Kate Stewart and Osgood were both copied in The Day of the Doctor, whilst Harry Sullivan was copied in Terror of the Zygons and Lucie Miller in The Zygon Who Fell to Earth).
 * The Doctor takes on the title of President of Earth. (TV: Death in Heaven, COMIC: The Hyperion Empire)

DVD releases
to be added

Blu-ray releases
to be added