Want a scary thought? (From a cbs news article)
Ernie Allen, the president of the National Center for Missing and Exploited Children, tells co-anchor Hannah Storm on The Early Show that this is a nationwide problem.
"There are 400,000 registered sex offenders in the United States," he says, "and an estimated 80 to 100,000 of them are missing. They're supposed to be registered, but we don't know where they are and we don't know where they're living. "