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Preview: "48 Hours" explores family's mysterious murder

| September marks a decade since Robin Doan's family died in a home invasion, murdered in their sleep. What the killer probably didn't know is that he left a 10-year-old witness behind. Doan shares her chilling tale of survival in the Texas panhandle. "48 Hours" correspondent Erin Moriarty joins "CBS This Morning" to preview her report.