Noted writer/biz expert David Turner joins the WtC cabal to analyze 'Chicago XI,' the last LP of the Kath era and the first Chicago album to feature a song with 'Chicago' in the title. Andy plays the Happy Man. Tim G. calls in for an episode of 'Tim's Take.' Plus: Robert Lamm earns his cop reputation, eerie premonitions in Danny Seraphine's songwriting, and the latest on Winston's troubling Grady's abuse.