The morning of Nov. 22, 2006 was cold and overcast.Cars were pulling up to the back entrance of the Montreal headquarters of the Royal Canadian Mounted Police in Westmount, just west of downtown.Inside the cars were some of the most powerful men in Montreal's underworld.Out came Nicolo Rizzuto Sr., the man who had seized control of the Montreal Mafia in the late 1970s. Wearing his trademark fedora hat and a long coat, his wrists were bound with plastic tie wraps instead of handcuffs.Rizzuto had kept a low profile in Montreal, but that all ended with his arrest.Police had collected almost 2 million wiretapped conversations of Rizzuto and the other leaders of the Mafia, making decisions about crimes like extortion, illegal gambling, drug smuggling and sports betting.Their investigation blew open the secrecy surrounding the Montreal Mafia and laid bare its extensive criminal organization.Learn more about your ad choices. Visit megaphone.fm/adchoices