Fatal Crossing: Case reopened into mysterious deaths of S.C. woman Kadie Major and infant daughter after "48 Hours" investigation - CBS News In 2015, a team of "48 Hours" producers were filming in Charleston, South Carolina, on another case when they met a mother who told them a story they couldn't stop thinking about — a mystery that has haunted the small town of Moncks Corner since 2008. Kadie Major, who was married, was found dead alongside a section of railroad tracks. Her little daughter was found drowned in a pond 100 feet away. Back in 2008, Rick Ollic, then with the Berkeley County Sheriff's Office, was in charge of the investigation. Ollic believed it was a murder-suicide and says a note found in Kadie's pocket was a piece of compelling evidence showing that she was delusional at the time. Kadie's family never believed she was delusional or that she would take her own life. Her mother, Vicky Hall, vowed to get to the bottom of what happened and pressured investigators to the point where she says they "absolutely avoided me." Hall embarked on her own investigation — determined to show her daughter did not throw herself in front of a train. "I remember, I was just walking outside by myself, and I just looked up and I said, 'Kadie and River, I promise you I will do whatever it takes to find the truth,'" Hall tells correspondent Peter Van Sant. Over the next several years Hall and "48 Hours" stayed in touch and started investigating the mysterious circumstances surrounding the two deaths -- which ultimately led to the reopening of a closed case. A decade after her daughter's death, Hall finally got her chance to talk with detectives about her case and "48 Hours" was there.