[He frowns a little, but not because he doesn't believe him, but because he's thinking about it. And he does believe him. In his experience, people don't make up that sort of thing.]

Exchanging lives like that isn't elementary magic. Bringing people back to life is a tricky business.

[Billy should know, considering he's....done it. Twice. Once on accident. Both times it was a disaster.]

It's pretty commendable to keep looking, but-

....like, are you sure it wants to be found?