"A...door?" he repeated, a curious expression crossing his features. So that was what this was about. "I...don't know, honestly. Probably?" It was a bit of a different thing, rifling through someone's mind versus manipulating dreams and realities. Similar, not entirely unheard of, but different enough that it made it just that bit much more dangerous.
"You just have to be careful. Whatever you do in there can leave a lasting mark, Caroline. And...it may not be good."