The Power of Three airs at 7.30pm on Saturday 22nd September on BBC One and sees 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?

Watch the trailers…

> Order Series 7 Part 1 on DVD on Amazon.

Are you looking forward to the episode? Let us know below…