the national archives reveal informant jack van landingham shared a cell with ruby. >> he told us about jack ruby, marcello had met him in dallas, texas. he was talking about his favorite subject, the kennedys and being deported. hi flew into a rage, cussing the kennedys, he said yeah, i had that little sob killed and i would do it again. >> marcello of course denied it and that indicated to me that there was an informal report to that effect. >> the fbi has the classified recordings and then landingham says the tapes also have marcello naming oswald as his hired gun. >> you got to explain ruby and oswald. both of them had years associations with mafia figures,