When Hannah Pettey’s health began to deteriorate, her husband, Brian Mann, eventually insisted she go to the hospital. In the previous months, Hannah had lost 45 pounds and was close to starvation and death. When doctors realized how much lead was in her system, they told her mother it could not have gotten there by accident. This medical mystery was now being investigated as an attempted murder, and the main suspects were two of Hannah’s closest loved ones. | 48 Hours