Stephen "The Rifleman" Flemmi


Flemmi and "Whitey" Bulger rose to the top of the underworld, helped by their corrupt connections inside the federal government and law enforcement and their fearsome reputations on the street.

Flemmi and Bulger were both FBI informants, according to the government (though Bulger's lawyer denies it).

Now Flemmi will be another key witness against Bulger, his cooperation part of a deal that spared him the death penalty in exchange for his pleading guilty in 2004 to 10 murders.