Philip Van Cise faced a double threat when he became Denver's district attorney in 1921. He quickly discovered that a massive bunco ring was operating unimpeded in downtown Denver, fleecing unsuspecting rubes out of enormous amounts of money. In addition, the Ku Klux Klan was gaining popularity across the state - winning key elections as it encouraged vigilantism and threatened many Denver citizens.My guest, Alan Prendergast, tells Van Cise's story in his new book, "Gangbuster: One Man's Battle Against Crime, Corruption, and the Klan". The author's website: https://alanprendergast.com/