The world is at war and you want to help fight it. So you board a train to a secret town in Tennessee that doesn't appear on any map, to work on a project that you will never truly know about. And, yet, this project will end the war. That was the fascinating story for the thousands of woman who toiled to help build a bomb without really knowing that's what they were doing. Frequent guest Denise Kiernan chronicles this mystery in her latest book, The Girls of Atomic City. Kiernan uses exhaustive research and interviews with living war veterans to uncover how the Army managed to keep the project secret from its own workers and she highlights the stories of some of the women who worked there. She'll share her story with us when Charlotte Talks Friday, Sept. 6.