Did Bruno Facciolo actually rat or did Casso make that up just to kill him?
D’Arco didn’t seem to believe that he was a rat.
Bruno was not a rat. Someone in his crew of associates was an informant, but Caracappa and Eppolito mistakenly said that Facciolo was an informant. I am pretty sure this was one of the killing the detectives did for the Lucchese. I know some say Salvatore Visconti was the informant, but Salvatore did not become an informant until after his brother Albert was killed a year after Bruno.