Case seen on Inside Edition, Good Morning America, and 48 Hours Accident, Suicide... Or Murder? On November 6, 2000, paramedics answered a call to find Kristin Rossum, 24, sobbing. Her husband, Greg de Villers, wasn't breathing and she claimed he had overdosed on drugs after learning she was leaving him. But family and friends who knew of Greg's distaste for drugs weren't buying Kristin's story—particularly the idea that he would take his own life. American BeautyThe daughter of a well-to-do California family, Rossum was a brainy blonde beauty whose talent for toxicology had won her a post at the San Diego County Medical Examiner's Office. But her sweet smile masked a dark side. She'd developed a taste for methamphetamine in high school, and six months after her marriage to Greg, she'd begun seeking secret trysts with other men. Toxic PassionAt the time of her husband's death, Rossum was engaged in an illicit affair with her married boss. Investigators found that the Medical Examiner's Office was missing supplies of meth and fentanyl, the narcotic that had killed her husband. With each clue discovered, another piece of Rossum's "good girl" facade fell away. What the world would eventually see was the true face of a murderer—and the hand of justice... 16 Pages Of Shocking Photos