An American Tragedy

It is every parent's worst nightmare. When Lisa Daley dropped her kids off at her divorced husband's house for the weekend, she had no idea that she would never see one of her children again. That night, when Lisa's ex-husband Steve Hippeard returned from work, he found their two-year-old son Evan dead, covered with bruises. Police charged Steve's girlfriend, Lauren O'Dell, with beating Evan to death.

CBS.com, in conjunction with CBS News 48 Hours, takes a look at child abuse in America through the lens of one particularly gripping and tragic case.

Who Killed Evan?: How could this innocent child die? And would Evan's eight-year-old brother, the prosecution's main witness, be able to withstand the pressure of the trial? CBS News 48 Hours reports.

The Marks Of Abuse: Expert advice on how to ensure that your kids stay safe. What to look for, and what to do about it if you spot something.

Child Abuse Sites: The Web has a wealth of information about preventing child abuse. We list the best places to begin your research.

Keeping An Electronic Eye On Your Kids: Some parents in California are using the Web to check on their kids at the daycare center.

Email Us Do you know a great story that you think 48 Hours should cover? Let us know. Or, just tell us what you thought of this week's show and site.

Produced by Dan Millikow and David Kohn