One of Donald Trump's main biographers, Maggie Haberman, says the US president's superpower is his "shamelessness." It's something he likely learned from his mentor, the notorious lawyer and fixer Roy Cohn. Pulitzer Prize-winning author Kai Bird's latest book, "American Scoundrel," takes a close look at Cohn and how his influence can still be seen on American politics today. Also on today's show: Director Tanaz Eshaghian, "An Eye for an Eye"; author Wilbert Cooper, "The Black Shield"  Learn more about your ad choices. Visit podcastchoices.com/adchoices