Candice Millard, the award-winning author of the national bestseller ”River of Doubt: Theodore Roosevelt’s Darkest Journey,” joins us for a talk about her fascinating new book: ”Destiny of the Republic: A Tale of Modern Medicine and the Murder of a President.” Her book focuses on the 1880s when a deranged office seeker shot and severely wounded President James A. Garfield only four months after his inauguration. The incident set off a debate about the nation’s direction and the scope of the President’s shockingly bad medical treatment. It’s a fascinating and little-known story about one of our most remarkable yet least-known presidents.The author is a former writer and editor for National Geographic, and her work has appeared in The New York Times, The Washington Post and Time magazine.