From Mommy to Monster

"What makes a mother kill her own children"? This question has been asked too often. And unfortunately the answers are unknown. We will look at 3 mothers who went from "Mommy to Monster" and killed the very children that they should have been protecting. We will look at the stories of Andrea Yates, Susan Smith and Diane Downs. In search of the answer to the question "What makes a mother kill her own children"?