Boston's most notorious gangster worked hand-in-hand with FBI agents, ratting out his Mob rivals in exchange for protection. When the partnership unraveled, James "Whitey" Bulger disappeared.
I don't know about you, but something about that bothers me. I think the story is that he was working with the FBI until it came out that the FBI was as dirty as he was. It reminds me of the way we've dealt with certain heads of state in recent years, Noriega and Hussein to name just two.
There are a number of fascinating articles on the Boston Globe site, among which is one from last year about a sighting here in Italy. A bunch of Task Force guys flew out. But I guess wiley Whitey was too fast for them. Come to think of it, I think I spotted him myself one day while sipping a cappuccino near the Coliseum. He was speaking perfect Italian and looked just like Jack Nicholson.