48 Hours Investigates reporter Richard Schlesinger found - a veteran crime scene investigator who retired from the Los Angeles County Sheriff's office in order to become the lead story editor on the hit show "CSI." Her name is Liz Devine. She was a criminalist for 15 years, working over 800 cases, solving countless murders, and helping convict many notorious criminals. But now she's brought her cases and her expertise to "CSI," where you'll see her at story meetings and with the actors whom she teaches about the real way to handle the forensics. When Richard Schlesinger went to the L.A. Sheriff's office to ask about Liz, a call came in about a quadruple murder case, and the office allowed Richard and our crews to follow the real CSI team while they investigated and solved the crime (you won't believe this) in exactly 48 hours. The story is riveting. You will be there when - and see how - the police solve the multiple murders. It's as good (actually better) than anything you've seen on the TV "CSI."