Science Helping to Catch Sexual Predators

Catching people who prey on others for sex can be difficult, convicting them even harder. But three little letters, D.N.A. can lead to big results in tracking down a faceless suspect. Being able to identify a suspect this way, whether it's a sex predator case, or a murder case, is a huge help for law enforcement. In fact, D.N.A. evidence is being credited with cracking a 21-year-old rape and murder case in Kinston. Investigators say it's become a priceless tool in fighting crime in the 21st Century. That certainly applies to sex predator cases as well. Tuesday we continue our special focus on sex predators by taking a look at what parents can do to help keep their kids safe on the internet.