10/12 The Doctor and Clara find themselves in an alien world, hidden on a street in London.
9/12 Terrifying footage discovered in the wreckage of Le Verrier Space Station.
8/12 With UNIT neutralised, only the Doctor stands in the way of the Zygons.
7/12 The Doctor and friends must try and save Osgood from a rogue gang of Zygons.
6/12 Deadly highwayman 'the Knightmare' and his sidekick come face to face with the Doctor.