"Baraka, Al, Teddy, and Sayyid--four black men from South Philadelphia, two Christian and two Muslim--are serving life at Pennsylvania's maximum-security Graterford Prison. All of them work in Graterford's chapel, a place that is at once a sanctuary for religious contemplation and an arena for disputing the works of God and man. Day in, day out, everything is, in its twisted way, rather ordinary. And then one of them disappears. Down in the Chapel...