A lot of people are surprised to discover that the most successful and numerically devastating serial killers are not the Jack the Rippers, who stalk their victims by night, or even the Ted Bundys, who charm, entice, then abduct, assault, and kill beautiful young women. Actually, and ironically, they are workers in one of the most sacred helping professions, people who don’t even bother to hide their identities or their faces from unsuspecting victims or their families.