"You did not double-cross him. If you did, you were dead." That's how one Boston police official described Whitey Bulger. Last night, after 16 years on the lam, FBI agents arrested James "Whitey" Bulger. He's accused of being involved in 19 murders, among other crimes. Authorities found him living in Santa Monica near the beach with his longtime girlfriend. For 25 years, Bulger ran the Winter Hill Gang, a mostly Irish mob in South Boston that controlled gambling, loan sharking and drugs in the area. By all accounts he was a violent and intimidating figure who inspired fear. Joining us to talk about this story is Richard Lehr, a veteran Boston Globe reporter and now a professor of journalism at Boston University.