http://blogs.smithsonianmag.com/history/2012/08/the-smoothest-con-man-that-ever-lived/ I'll just leave you to read this one.
Hmmm ... "Then Lustig’s girlfriend, Billy May, found out he was having an affair with Tom Shaw’s mistress. In a fit of jealousy, she made an anonymous call to the police and told them where the Count was staying in New York." Sometimes "brilliant" criminals stumble upon such minor details. Christian