The 'Finding Your Roots' host has a new book and PBS series called 'The Black Church.' Gates describes the Black church as "the cultural cauldron Black people created to combat a system designed in every way to crush their spirit." We'll talk about the bargain Gates made with Jesus when he was 12 in an attempt to save his mother's life. He'll tell us how that bargain changed him, and how his relationship to the church has changed over the years. Maureen Corrigan reviews the new novel 'The Final Revival of Opal and Nev,' about a '70s rock duo.