Isaac doesn't want to think about what it'd mean if he tried the door and it didn't work. After what happened tonight with Derek, after the closet with Allison, he's not entirely sure he could take another fracture like that (even if it was only a minor blow). "Maybe later," he says, wishing that Scott were here or Stiles or Deaton or someone who'd know something.

Actually, that's a lie. Right now, Isaac would be happy for that warm bed and change of clothes. "No one's expecting me, anyway," he adds.