You've been here before. Twice. And vanished each time.
Ther'es no Smallville either. I'm sorry, Clark. I live in London now and work for the London Times.
It is, and I would never have believed it if you -- a different you who was here before, obviously -- hadn't explained it to me. Sometimes people disappear from here as suddenly as they came, but there's no trace of them when they vanish. People we know might show up or might not and we don't know if there's a way home. It's an alternate universe where... a lot of weird things can happen.
There's a lot to explain. You might want to hear it in person.