Bianca is in the pub when she catches it, but no one comments on the way she stiffens like a dog going on point. She finishes cleaning the beer nozzle, because Bianca is a professional, but she takes her late-night tequila with her instead of drinking it with the other bar staff, because Bianca is alight with curiosity.

It isn't her hallway he's in, but that doesn't matter, because every hallway is still on her boat and now her boat is full of the Doctor. She stops just outside the stairwell and gives him a long, unsmiling look.

Behind her eyes the calculations run, invisible as worms in the night. Of course it's him. He doesn't know who I am. He does know who I am. Whatever happens, this is when everything changes and I may have to stab him just for that.

The first coherent intent she's aware of forming is to contact Koschei. She doesn't need to: he can certainly perceive everything she can and maybe more, but her hand is on her communicator already. She calls up an image: a single Gallifreyan glyph that signifies change, a storm, the world turned upside down. They've taken to using them sometimes: emojis for concepts there are no other languages for, a little private joke. Then she doesn't send it, certain that he already knows and doesn't need her input on his irritating friend.

She sighs noiselessly and then she speaks.

"Fancy seeing you here."