As Peter gets closer, he sees signs of bodies being dragged. At first, he thinks it might be the creature, dragging victims away to do who knows what with them, but then he notices that they're being dragged away from the damaged areas, meaning that someone or something is trying to save people. Which, great, he could always use the help, but he's doesn't want anyone else to get hurt if they don't have to.

...Especially not if that person is his boyfriend. What the hell is Stiles doing here?! Peter wants to yell at him to get out, but he has to be careful not to tip him off that he is who he is, under the mask.

"Hey, man..." There's the sound of a crash coming from down the hallway, and Peter briefly glances towards it, before turning his attention to Stiles. "Look, I appreciate the help in getting these people out of harm's way, but you really need to get outside, now."