Baltimore, Maryland likes to call itself Charm City. But you have to wonder: Is the nickname ironic?  Consider one of the city's star cops, a sergeant so accomplished that he earned his own nickname, the Golden Boy.  But Golden Boy led a double life. Said one of those who encountered him in the street.  "I was robbed by the Baltimore City Police….with a gun … armed robbery."  No one believed the allegation. Then a GPS tracker was discovered where it shouldn't have been; next, a wiretap went up on a cop's phone. An FBI agent couldn't believe what she was hearing. Are these guys  gangsters? And then … an insider turned witness. "Like Rambo said, burn it down. And that's what I did."  Welcome to Charm City, where it was sometimes difficult to tell the protectors from the predators. A podcast from Orbit Media reported and produced by the BBC and hosted by Jessica Lussenhop.See omnystudio.com/listener for privacy information.