Starring Matt Smith and Karen Gillan as the Doctor and Amy Pond, The Beast Below guest stars Sophie Okonedo (Hotel Rwanda, Scream of the Shalka) and The Demon Headmaster, Terrance Hardiman.
Digital Spy have apparently seen a copy, and have published a list of teasers which might or might not be considered spoilers.
We’ve picked a few and covered them up, just in case.
It’s set more than a millennium into the future, at a time when the Earth has been abandoned and the UK is a floating spaceship known as Starship Britain.
That apparently makes Amelia Amy… oooh, 1306 years old.
The Smilers are creatures that live in arcade machine boxes, similar to the Zoltar fortune teller from BIG. Except you should try to avoid interacting with these.
Amy is presented with three options, Matrix-style. She chooses the second, then the third.
Amy wears her nightie throughout the episode – and it gets wet.
He may appear to be fun and kooky, but this Doctor can get angry. REALLY angry.
Episode two directly segues into episode three when The Doctor gets a call from an old pal.
The Beast Below airs at 6.15pm Saturday 10th April on BBC One and BBC HD.