He appeared to be a normal individual who didn’t harbor any murderous tendencies, but the mother of one of his hockey buddies soon learned this was untrue. William’s murderous ways began in 1979 with Hazel Scattolon, but it wouldn’t be until the late nineties that he was finally arrested and charged with her death, as well as four more deaths. If these were the only crimes he’d committed, he wouldn’t be considered the deadliest serial killer Canada has ever seen, but there is evidence to suggest William has been a part of numerous other crimes over the twenty years between Hazel’s murder and the murders of Anna Yarnold, Monique Gaudreau, Teresa Shanahan, and Mary Glen.