"Not surprising with all that racket. I knew it wasn't rats," Crowley says with just a hint of vindication in his tone.

But that also means something not human is puttering around in the walls which definitely doesn't bode well.

"Does she know what it is? If it's human-shaped or something else entirely...?" Crowley asks because he is savvy to the kind of things that move through vents and walls, and few of them are remotely as pleasant as rats.