Hansel & Gretel; library Something to do wasn't necessarily bad; it wasn't exactly good since it was something potentially dangerous for these idiots, but it wasn't like either of the twins were all that good at inactivity either.
He didn't really notice anything that should've startled Gretel so bad, as he turned to check the area again before giving her his attention, "What? Y'okay?"
The fact that the noise in the shelves could've just been another 'normal' ghost in this place rather than one of these body snatching things was enough of a reason to wait to make sure his sister was fine. Neither of them were all that easy to shock, although this place was taking things to a whole new level with that, so Gretel's outburst was more worrying than the noises.