Shapeshifting Zygons are everywhere in the UK, and there is no way of knowing who to trust.
With UNIT neutralised, only the Doctor stands in their way. But how do you stop a war? And what can the Doctor do to save his friends?
‘The Zygon Inversion’ will air at 8pm on Saturday 7 November on BBC One.
Here are 10 teasing spoiler-free lines of dialogue from the episode…
‘I am not winking at you!’
‘Don’t look at my browser history!’
‘You know how it is, Daddy knows best.’
‘D’you know what thinking is? It’s just a fancy word for changing your mind.’
‘I was happy like this. I was happy.’
‘You just want cruelty to beget cruelty.’
‘Where is the Osgood Box?’
‘I’m going to set you free.’
‘The mind of Clara Oswald. She’ll never find her way out.’
‘Trust me, she doesn’t leave.’
Are you looking forward to ‘The Zygon Invasion’? Let us know below…