For 20 years, Scott Peterson has been behind bars, found guilty of murdering his pregnant wife Laci and their unborn son. Could evidence brought to light by the Los Angeles Innocence Project set one of America's most notorious convicted killers free?

Supermodel Gisele Bündchen is opening up like never before. She sits down with Robin Roberts at her sprawling ranch in South Florida to discuss her return to modeling, her new cookbook, Nourish, and life, love & co-parenting after divorce.