The FBI gets into bed with a suspected killer, on the dubious premise that he can give it information on other criminals, even though he is, by deed and reputation, far worse than any of the people he’s supposedly informing on.

Sound familiar? It should. It’s Whitey Bulger all over again. Except this time Mark Rossetti is Whitey Bulger. And this isn’t ancient history. It was going on until just last year, and is only now coming out.

Rossetti is a reputed caporegime in the Boston faction of the Mafia. He is a convicted armed robber and is awaiting trial on charges that he ran a loan sharking and heroin ring. He is considered a suspect in at least six unsolved homicides, according to multiple law enforcement officials."