Stories Television Doctor Who Series 9 Doctor Who S9 Episode: 1 2 3 4 5 6 7 8 9 10 11 12 The Zygon Invasion 1 image Overview Characters How to Watch Reviews Statistics Related Stories Quotes 2 Transcript + Script Overview First aired Saturday, October 31, 2015 Written by Peter Harness Directed by Daniel Nettheim Runtime 45 minutes Story Type Two-Parter Time Travel Present Tropes (Potential Spoilers!) Alien Migrants, Companion Doppelgänger, Consequences, Mind Control, Shape Shifting Story Arc (Potential Spoilers!) The Zygon Treaty Location (Potential Spoilers!) Earth, England, London, Turmezistan UK Viewers 5.76 million Appreciation Index 82 Synopsis A long time ago, the Doctor made a deal in the Tower of London. 20 million Zygons walk among us, in human form, living undetected in peace and harmony. But cracks are showing in this delicate peace. Humans and Zygons are disappearing. In city apartment blocks, lifts are going missing, and far below the streets of Britain, alien pods are growing in secret caverns. To top it all off, UNIT's scientific advisor, Osgood, sends a desperate message to the Doctor - but since Osgood is long dead, how is that even possible? Watch Watched Favourite Favourited Add Review Edit Review Log a repeat Skip Skipped Unowned Owned Owned Save to my list Saved Edit date completed Custom Date Release Date Archive (no date) Save Characters Twelfth Doctor Clara Oswald Zygons Kate Stewart Petronella Osgood UNIT Show All Characters (6) How to watch The Zygon Invasion: Watch on iPlayer Blu-Ray The Complete Ninth Series DVD The Complete Ninth Series Blu-Ray Series 9: Part 2 DVD Series 9: Part 2 Reviews Add Review Edit Review Submit a Review Statistics AVG. Rating688 members 3.69 / 5 Trakt.tv AVG. Rating1,801 votes 3.77 / 5 Member Statistics Watched 1419 Favourited 106 Reviewed 0 Saved 2 Skipped 0 Owned 13 Related Stories Doctor Who Specials The Day of the Doctor Rating: 4.35 Story Skipped Television Reviews(10) More Actions View Sets Close Related Sets Set of Stories: Doctor Who 50th Anniversary Specials Set of Stories: Doctor Who (2005-2022) Set of Stories: Eleventh Doctor Add Review Edit Review Skip Skipped Unowned Owned Save to my list Saved Target Collection Doctor Who: The Zygon Invasion Rating: 3.95 Story Skipped Audio Book More Actions View Sets Close Related Sets Set of Stories: Target Collection Add Review Edit Review Skip Skipped Unowned Owned Save to my list Saved Doctor Who S9 • Episode 8 The Zygon Inversion Rating: 3.95 Story Skipped Television More Actions View Sets Close Related Sets Set of Stories: Doctor Who Series 9 Set of Stories: Doctor Who (2005-2022) Set of Stories: Twelfth Doctor Add Review Edit Review Skip Skipped Unowned Owned Save to my list Saved Video Games LEGO Dimensions Rating: 4.07 Story Skipped Video Game Reviews(3) More Actions View Sets Close Related Sets Set of Stories: Video Games Add Review Edit Review Skip Skipped Unowned Owned Save to my list Saved Doctor Who Lockdown The Zygon Isolation Rating: 3.17 Story Skipped Webcast Reviews(2) More Actions View Sets Close Related Sets Set of Stories: Doctor Who Lockdown Add Review Edit Review Skip Skipped Unowned Owned Save to my list Saved Quotes Add Quote Link to Quote Favourite Tags: Funny JAC: It's an odd world nowadays, isn't it? CLARA: It's always been an odd world. JAC: Mmm. I mean, doesn't it feel, sometimes, that things are coming to an end? Everything's just going nuts. CLARA: You're middle-aged, that's what it is. No offence. Everybody middle-aged always thinks the world's about to come to an end. Hmm. Never does. It's here. Oh, my God. — The Zygon Invasion Show All Quotes (2) Open in new window Transcript + Script Needs checking Once upon a time, there were Three Doctors. (10th, 11th and War Doctor in the TARDIS.) Two Osgoods. [National Gallery lift] (Previously on The Day of the Doctor) Show Full Transcript Open in new window View Script (PDF)