TEXT: Once upon a time... there were Three Doctors Two Osgoods [SCENE_BREAK] [ National Gallery lift ] [SCENE_BREAK] ( Snarling ) Osgood 1 (Chanting): The Doctor will save me. The Doctor will save me... Osgood 2: Excuse me, I'm going to need my inhaler. [SCENE_BREAK] One peace treaty [SCENE_BREAK] [ Black Archive ] [SCENE_BREAK] Tenth Doctor: Any second now, you're going to stop that countdown. Both of you. Together. Eleventh Doctor: And then you're going to negotiate the most perfect treaty of all time. Tenth Doctor: Safeguards all round, completely fair on both sides. Eleventh Doctor: And the key to perfect negotiation? Tenth Doctor: Not knowing what side you're on. Eleventh Doctor: So, for the next few hours, until we decide to let you out... Tenth Doctor: No-one in this room will be able to remember if they're human... Eleventh Doctor:.. or Zygon. Tenth Doctor: Whoops-a-daisy! BANG! Both: Cancel the detonation! [SCENE_BREAK] [ Office ] [SCENE_BREAK] Osgood 1: Hello. Osgood 2: Hello. Do you want to...? Osgood 1: No, you can, if you... Both: Shall we do it together? Osgood 1: Operation Double. Osgood 2: The Zygon peace treaty. Osgood 1: I'm Osgood. Osgood 2: I'm also Osgood. Osgood 1: Remember that. It'll be important later. Osgood 2: Operation Double is a covert operation, outside of normal UNIT strictures, to resettle and rehouse an alien race in secrecy on planet Earth. Osgood 1: With UNIT's help, 20 million Zygons have been allowed to take human form, been dispersed around the world, and are now living amongst us. Osgood 2:
SUMMARY:
A peace treaty has allowed 20 million Zygons to remain on Earth, peacefully living out as disguised humans. Two versions of the scientist Osgood, a human and a Zygon duplicate, kept the peace until one of them died and the other disappeared. The Doctor leaves the Osgoods the Osgood Box to be used as a last resort. In New Mexico, a Zygon splinter group kidnaps Osgood. In London, a splinter group member called Bonnie takes over Zygon High Command. At the block of flats where Clara lives, Clara is knocked unconscious and hidden in a pod underground. Bonnie takes Clara's place. Bonnie tricks UNIT troops into going to a series of underground tunnels, which many other lifts across the city are connected to. The troops are killed by the splinter group when they attempt to escape. Kate Stewart is attacked by a splinter group member disguised as a sheriff while investigating Osgood in New Mexico. The Doctor rescues Osgood from captivity in Turmezistan and the two set off back to London. A Zygon captured and taken on board the plane tells the Doctor the invasion has already taken place. Bonnie fires a missile at their plane.