They wear a facade, like
the false building fronts of a Hollywood set, never allowing anyone to see the
true ugliness inside. BTK was a church deacon; John Wayne Gacy entertained
children as a clown, and Ted Bundy worked at a suicide hotline. The danger
remains hidden in plain sight; they are the frayed wiring behind the walls, the
worn O-ring on the space shuttle, the total stranger in your family. They walk
amongst us daily, and we never suspect.
- excerpt from "The Killer's Handbook"