"48 Hours" investigates unusual search for a killer in Angie Dodge case
How did a public DNA database owned by Ancestry.com lead police to suspect a New Orleans filmmaker in a brutal murder of an Idaho teen 20 years after the crime? CBS News correspondent Anne-Marie Green joins "CBS This Morning" to preview her report, "The DNA of a Killer," an all-new "48 Hours" airing Saturday at 10/9c.