They come from every imaginable background. They are as young as 14 and as old as 93. Many have children, wives or girlfriends. Some are single. They are blue-collar workers, public figures and professionals, they represent every race, and estimates suggest they are in the millions. They are the johns -- the men who buy women and children in prostitution. And for author Victor Malarek, they are the root of the problem he calls the "flesh trade."