A new episode of Doctor Who airs tonight on The BBC and BBC America.

Here’s how they describe it:
When terrifying events threaten Coal Hill school the Doctor decides to go undercover. The Skovox Blitzer is ready to destroy all humanity – and worse, any second now, Danny Pink and the Doctor are going to meet.
Here are some preview images:
“The Caretaker” is written by Gareth Roberts and Steven Moffat, and it is directed by Paul Murphy.