The Doctor faces one of his oldest and most fearsome enemies in the opening episode of the two-part series finale.

The deadly Cybermen have landed in London again, and in an adventure that in part pays homage to a famous 1968 episode called ‘The Invasion’, they’re spreading terror as they descend the steps of St Paul’s Cathedral. But it soon dawns on the Doctor that another foe might have had a hand in their arrival…



Up in the Nethersphere – a heavenly place that viewers have glimpsed throughout this series and where people seem to go when they die – mysterious Missy (Michelle Gomez) and her sinister organisation 3W have been watching the Doctor with great interest. Now, with the help of her cunning assistant Seb, she’s planning a terrible trap for the Time Lord…



Before long the Doctor finds himself at the gates of the Nethersphere. He’s on a special mission but when he gets there he’s horrified when he discovers the true nature of Missy’s plans. Could he be trapped in the Nethersphere for ever or can Clara and his friends rescue him?