In the early 1970s in Mississauga, Ontario, a terrifying pattern emerged when 19-year-old Constance Dickey and 18-year-old Neda Novak were abducted, sexually assaulted, and found murdered only months apart. On August 19, 1974, 16-year-old Julia Sheldon survived a brutal attack and identified her assailant as 24-year-old Henry Robert Williams, a married father of two. The ensuing investigation revealed Williams as the perpetrator behind the earlier killings. He was arrested, tried and convicted, bringing an end to a spree that had left a community reeling.