But if the allegations are true-which only a court can determine now-do we really know Steven Ferris?

And what of the other 300 sexual predators identified and released from Florida prisons? What of their dark motivations and urges? How do you recognize evil coming, and what can we do about the men who bring it?

The habits and methods of child molesters are no secret. Law enforcement has worked off a general but clear profile for years.

The more that is learned about Ferris, the closer he fits that outline. Detectives could have picked him off the pages of their own investigative handbooks.

The story went on to describe how Ferris, a part-time construction worker and handyman, had come across the two girls and their mother in a local park. They had been living out of their car for several months. Nick had interviewed the mother, who could not find work and was in South Florida alone. She was cooking the family meals on the grill of the campsite and at night she made up an impromptu bed of blankets and pillows made of clothes packed in pillowcases in the back seat for her daughters while she slept in the front. She said her pride had kept her from going to the homeless shelters and community aid programs. She was doling out her savings in order to pay the monthly fee for the camping space. Restricted to only one month at a time, she would drive off for the minimum three days, parking on the streets, and then come back and pay again, taking yet another spot for another month. The woman said she had specifically picked this park because it was close to an elementary school and that she had enrolled her daughters there using the address of a friend who had put them up for a time until her boyfriend had demanded they leave. The mother said she wasn't afraid of living out in the streets as long as her daughters were near. At night she could reach across the seat back and touch her girls and hear them sleeping in the dark. She considered the park safe. And then Steven Ferris had found them.