Doctor Who: The Power of Three

Doctor Who continues on UK, US and Canadian TV screens tonight, with The Power of Three by Chris Chibnall.

The Doctor and the Ponds puzzle an unlikely invasion of Earth, as millions of sinister black cubes arrive overnight, almost like presents falling from the sky.

But what are they, what’s inside them and most importantly, who sent them? With the international community at a loss, it’s left to the Doctor to unearth who is behind the mystery.

Guest stars: Mark Williams, Steven Berkoff and Jemma Redgrave

Written by Chris Chibnall
Executive produced by Steven Moffat and Caroline Skinner
Directed by Douglas Mackinnon
Produced by Marcus Wilson

• UK: tonight, 7.30pm on BBC One and BBC One HD
• US: tonight, 9.00pm ET on BBC America
• Canada: tonight, 9.00pm ET on Space