A Dalek fleet surrounds a lone rebel ship, and only the Doctor can help them now... With the Doctor facing his greatest enemy, he needs Clara by his side.
When terrifying events threaten Coal Hill School, the Doctor decides to go undercover. The Skovox Blitzer is ready to destroy all humanity - and worse.
Dr Martin Ellingham and Pauline are surprised by the number of patients coming to see him on the last day before his Surgery closes and he moves to London. Edith comes to see Martin to discuss the previous night’s events in the hotel. Edith says she will see Martin again when he is settled in London.