A true gentleman, his personality was as big and warm as his voice. We’ll miss him very much.

In the distant past, the land that would be India played host to a war between ancient aliens, whose cross-temporal battles contributed to the country's rich myths and legends. Kali, oldest and deadliest of these creatures, was thought defeated long, long ago; her body scattered throughout time to prevent her return. But her psychic essence could not be killed... nor her millennia-long quest for vengeance.

Now, in the 23rd Century, she is on the brink of resurrection. And with India at the forefront of human spaceflight, it's not only Earth that falls to her predations if she succeeds – but the whole cosmos!

In a race against time, and across it, the Doctor and Clara must gather secrets, intelligence and allies from across India's past, present and future – if they are to survive... THE SWORDS OF KALI!

GABBY IS DYING FOR HER ART.

With the Doctor half the man he should be, under the draining influence of an alien tourist trap, Gabriella is left to shoulder the burden of saving him, the planet, and the future of art in our galaxy - and all on her first off-world trip, no less!

Trapped in a terrifying creative retreat, where what was once beautiful has been rendered corrupt and horrifying, is Gabby strong enough to reverse whatever has been done to the Doctor and save an intergalactic artistic community from itself? You’d better hope so!

And who, or what, are the deadly Consultants… and what plans do they have for the Doctor?!

I think I’m being pretty open that it’s Santa meets Alien meets The Thing from Another World meets Miracle on 34th Street. It’s a weird mash up! There’s a base under siege, there are scary monsters. It’s one of the scariest Christmas Specials we’ve made, actually...