[The sound of metal is one of those sounds thats hard to mistake for anything else. Where human knuckles, an odd combination of soft flesh and hard bone, knock on a door they knock with a lower, dulled rap against. Meanwhile metal is inescapably higher in pitch and the sound is clearer, sharper, with none of the muting effect of skin. As such, Whistler's curiosity is piqued when he hears the sound at his door.

That was a new one.

Following the little guides he's set up for himself, objects turned certain ways so they act as a sort of compass to let him traverse his apartment with ease, he makes his way to the door and tugs it open]

Hello?

[And though he is staring straight at Nick, he only has a guess about who could be standing in front of him]

That you, Nick?