Once releases, Morgana nods, instead of saying anything, and follows the Doctor up the stairs, back into the lobby of the large glass building. She might be imagining it, but she thinks she can still hear the water bubbling.

Morgana?

It's the same voice from before, and Morgana, for a moment has the same reaction, turning towards it.

No, it was not real last time and she did not fall for it the first time. Instead, she confirms a theory.

"Doctor, did you hear something just then?"

She's still holding his might-be-a-screwdriver.