Who is Charles Koch—really? Who are the members of the Network? "a semi-secret group assembled by the Koch brothers"? How are the superrich's priorities transforming American society? Journalist Jane Mayer spent several years searching for some of those answers, and her new book is titled Dark Money, the Hidden History of the Billionaires. Mayer is interviewed by Atlantic magazine editor-in-chief James Bennet. Special thanks to Politics and Prose Bookstore & Coffeehouse.

Hosted by Andrew Stelzer. Produced by International Radio Project.