"If anyone else would know, it would be Crowley." The fact that there could be different worlds is fascinating enough. The fact that they seem to be parallel in some strange ways has him nearly vibrating with a desire to know more. Yes, it could all be some elaborate lie or hoax. He could still be headed for a torture chamber after this for all he knows.

No one has ever been able to accuse him of not being in the moment. "Do tell, then. If you're anywhere near as old as we are, then you'll likely appreciate the fact that discovering something completely new is exceedingly rare."