'Better Call Saul,' the prequel, spin-off of 'Breaking Bad,' is back for season two. Last year, when Terry Gross spoke to co-creator Peter Gould (who also wrote for Breaking Bad), he said that it was a writers' room joke that if something didn't fit on 'Breaking Bad' it would go on the "Saul Goodman show." Actor Jonathan Banks joins the conversation. Also, Terry Gross spoke to Bob Odenkirk in 2013 about playing Saul, the sleazy, fast-talking lawyer.