He listens. There's nothing but silence and their breathing, the Doctor's a bit heavier than Morgana's.

"I must've been---"

Without warning, there's a loud crack, and the front door, the one they walked so calmly through moments before, all but explodes off of its hinges as a torrent of clear water pushes through. It doesn't stop, quickly making to fill the room.

"We need to get out of here!"