That is the persona of many con artists, abusers, paedophiles, and killers. Ted Bundy was handsome and educated. The number of young women he raped and killed has not been determined, but it may have been more than 200.
Dennis Rader confessed to ten murders over a span of nearly 30 years upon his capture in 2005. In between murders, he lived a remarkably normal outward life with a wife and two children. He was a member of Christ Lutheran Church and had been elected president of the Congregation Council. He was also a Cub Scout leader. His killings all took place in Kansas.
As a child, he tortured animals. He also harbored a sexual fetish for women’s underwear and would later steal underpants from his victims and wear them himself.