The devil always dumps you, after he makes you feel like you're the hero of the world and the most important person in history.
Richard Ramirez found that out when the cell door clanged shut. The phone number doesn't work any more. The number you have dialed is out of service.
Lee Harvey Oswald found that out when he tried to call his CIA contact in Maryland - or was it D.C. No answer. He was used and screwed. Tim McVeigh too.