An all new '48 Hours' Saturday Feb. 4, 2017

48 HOURS on CBS. The next episode is called, "Guilty until Proven Innocent" that will air this Saturday at 10/9 p.m. 

CBS says, "Two friends convicted of rape claim neither did it. Their families stuck by them. Now, more than 20 years later, a new DNA test will change everything. "48 Hours" correspondent Maureen Maher investigates."