Ron Shelton is an Academy Award–nominated writer and director, former shortstop for the Bluefield Baby Birds, and author of a humdinger of a new memoir called "The Church of Baseball: The Making of Bull Durham — Home Runs, Bad Calls, Crazy Fights, Big Swings, and a Hit." On the show today: How Ron sold the movie before he had a story, wrote the script without a plan, played ball with Kevin Costner, and got directorial pointers from Susan Sarandon. --- » Want to hear the world's leading authors summarize their books in 12 minutes? Download the Next Big Idea app today at nextbigideaclub.com/app/

The Ohio, Hudson, Mississippi, and Yellowstone — Dick Conant canoed them all. And then he disappeared. In his riveting new book, “Riverman,” journalist Ben McGrath tries to track down the man who may be the greatest American folk hero you’ve never heard of. --- Download the Next Big Idea app today at www.nextbigideaclub.com/app