He's in Victorian London tonight, where he finds a dinosaur rampant in the Thames, and a spate of deadly spontaneous combustions.
Can Clara - the gorgeous Jenna Coleman, returning as the Doctor's companion - and the new Doc get along well enough to save the planet, and survive this terrifying mission? What's at the heart of this alien conspiracy?
The Doctor has changed – will we like him as much? And will he be as good as saving the world?
Doctor Who, BBC1, 7.50pm
Watch the trailer:
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