Plot
On the terraformed ice planet of Isen IV, the Doctor and Clara discover a monstrous Hyperion has been awakened at the planet's core. Can they halt the rampage of a living star, in the middle of the celebrity wedding of the century, before it escapes to conquer the galaxy?
And when Clara and the Doctor land in India, a conspiracy hundreds of years in the making comes to light! A Thuggee cult is trying to resurrect one of the most deadly aliens yet known... Split across two time zones, our heroes must stop this return at all costs – with the help of Rani Jhulka, 'the renegade Amazon' in the 1820s, and Priyanka Maratha, daughter of one of the Doctor's oldest friends, in the Mumbai of 2314!