In the year 1990-1991 - John Gotti, the infamous New York Gambino crime family mob moss was "holed" up in Ten South, the high-security wing of the New York Metropolitan Correctional Center's - (In Lower Manhattan) most "secure" area. It was, by design, as grim as any corner of hell. There were 6 narrow cells, lined one after another within this "area". One was occupied by the Family consigliere of the Gambino crime family - Frank Locascio --- AND --- another occupied by Sammy "The Bull" Gravano --- The Gambino Family "Hit-Man" --- (Credited With 19 Murders) --- AND --- one occupied by Frank Gotti, The "Don' of the Gambino Crime Family. Gravano was in the middle cell - in between Gotti & Locascio. In the 1st week of October 1991 --- Sammy "The Bull" Gravano --- sent word from his cell in 10 South that he wanted to meet with the FBI --- AND --- speak with them ALONE! The FBI thought this was just another gangster scam by "The Bull". At the time --- Robert Mueller was --- then U.S. Assistant Attorney General for the Criminal Division. Robert Mueller didn’t believe it. And neither did Bruce Mouw,the head of the F.B.I.’s C-16 team that had painstakingly built the case against Gotti and his henchmen. But, Mueller had the "final" say & ordered that the FBI arrange for a secret interview in the upstairs conference room between Gravano & the FBI. On Oct. 10, 1991 Gravano was escorted out of his cell with all deliberate fanfare & ceremony to "fool" John Gotti & Frank Locascio --- fooling them, that is, into believing that Gravano was NOT about to "Rat" out on his two cohorts but was merely being led out to a scheduled "voice analysis" test - something that both Gotti and Frankie Locascio had themselves already undergone.