Though today’s Doctor Who news has been all about Missy, this short clip is sure to whet you appetite for Saturday.

There’s not much to go on here, we’ll admit, but 10 seconds of Doctor Who is better than no Doctor Who, right?

See, told you. Still, it’s enough to get us pumped for the first part of an trilogy storyline that will reveal the mystery behind the locked door. We love a locked door, to be fair.

This trailer follows on from two longer clips, revealed after the last episode on Saturday. You can see them below.

Check out out Doctor Who series 10 episode guide, with updated synopses and review links here.