At the time of his takeover , the Gambino family was regarded as the most powerful American mafia family , with an annual income of $500 million .
Identified as both Castellano 's likely murderer and his successor , Gotti rose to fame throughout 1986 .
At the time of Gotti 's takeover , the Gambino family was regarded as the most powerful American mafia family , with an annual income of $500 million .
Identified as both Castellano 's likely murderer and his successor , Gotti rose to fame throughout 1986 .