IN CONVERSATION: RACHEL MADDOW – Rita Braver talks with journalist Rachel Maddow about her new book, Prequel: An American Fight Against Fascism, which traces the fight to preserve American democracy back to World War II.SLY STONE – Kelefa Sanneh looks into the life and legacy of music great Sly Stone and his mysterious disappearance from the public eye.BITTERSWEET – Seth Doane travels to Ghana, where many of the world's cocoa beans for making chocolate are harvested.COMING TOGETHER – Lee Cowan reports on a unique domestic exchange program bringing together U.S. high school students from different parts of the country.THE GREATEST SHOW… Martha Teichner covers the comeback of the legendary Ringling Bros and Barnum & Bailey Circus.OPINION – Jim Gaffigan considers going to the movies with his five children.