Maybe we're looking in the wrong place. We still need to look for each individual person, but... we need to find a way to look for the source.
For anything here, really, that's out of place. That doesn't make sense. That might be powerful.
I don't know if I really think a Trouble could help with that, either. I'm not sure anyone has powers strong enough to detect it. Maybe they're — or it's — doing that on purpose.