[He hesitates, then nods - steps into the building and closes the door after them, leaving the place mostly in darkness, the only light that filtering in through the windows.]

[He heads toward the back and slips in through a door that opens with a press of a metal bar onto an empty stairwell, even darker; he digs his phone out for light and pads up in silence, past one flight of stairs, and then another, and then a third, before emerging onto another floor, equally empty as the ground floor.]