A look at three killers who used the Internet to lure their victims in for the kill.SHAREE MILLER - Sharee Miller was a gorgeous, single mother-of-three when she met her husband Bruce Miller. At the time, she was in her early twenties, broke, and weeks away from being homeless. The couple initially met when Sharee began working at Bruce's automobile scrap yard as a bookkeeper. After only three months, Sharee moved herself and her three kids into Bruce's house and they quickly became a family. Bruce gave Sharee a sense of stability she had never experienced and Sharee was kind, caring, and loving to Bruce. After only a few more months, the couple married. Domestic bliss loomed on the horizon. But six months later, Bruce was dead courtesy of his new wife.MARK TWITCHELL - Mark TwitchelL used one of the most popular dating sites around, PlentyofFish.com, to lure his victims to an empty garage, where he hoped to satisfy his lust for blood. His first attempt went wrong, and his victim got away – the next was not so luckyJOHN RICHARDSON - Known as the "Internet's first serial killer," he embodied a con man's savvy with reckless precision, taking at least eight women down his path until his conviction in 2003.