Parts: 1 (45-minute)
Writers: Stephen Thompson and Steven Moffat
Airdate: 13 September 2014
Production Code: n/a

Doctor: twelfth
Companion: Clara

Story: Clara has plans for an evening out on the town with Danny, but finds herself unable to resist the Doctor's pleas to accompany him on one quick trip...

And the next thing Clara knows, she's in a darkened room, with the Doctor and two strangers, clutching a memory worm, with armed guards trying to break down the door and kill them all. As Clara soon learns, the four of them have all agreed to rob the greatest, and most impregnable, bank in the galaxy. Except that none of them knows how to get into the Bank of Karabraxos, what they'll find when they get inside, why they agreed to the heist, or even what they're meant to be stealing...