"48 Hours" investigates new info on 1990 double murder of friends
New DNA technology was at the center of the latest efforts to solve the mystery behind the 1990 double murder of two friends. Betty Jones and Kathryn Crigler were attacked at Crigler's home in Mississippi. The case went unsolved for nearly three decades until Jones' step-grandson put the case back in the spotlight through a podcast. With the help of cutting-edge technology, police were able to uncover new information. Richard Schlesinger joins "CBS This Morning" to preview Saturday's "48 Hours."