MISSISSAUZE, ONTARIO, CANADA - MAY 6, 1982. A teenage girl named Darlene "Dolly" Prioriello, 16, was waiting for the bus at a bus stop near her home, she had no idea that she would meet her killer that day. She was returning from her boyfriend's house when David James Dobson, 17 and only a year older than her, pulled up in his car and offered her a ride. She declined the offer at first, but David convinced her and she got into his car.

David drove her to a deserted place next to a factory, where he brutally raped her, tortured her and then killed her. Her corpse was found four days later in the typical state in which sadistic predators leave their victims. Her legs were spread open and her vagina exposed. She had a safety pin stuck in her nipple. Her head was completely crushed with a brick and showed signs of strangulation. Her killer also confessed to burning her genitals with a lighter.

When the police began their investigation, Dobson sent letters taunting them and describing how he enjoyed his act. But the police were more capable than he thought and arrested him only two days after the body was found (six days after the murder). He confessed to everything under the weight of evidence and was sentenced to life imprisonment. In 2007 he applied for parole, but was denied.