Here's the C-SPAN video from our book talk about "Empty Mansions: The Mysterious Life of Huguette Clark and the Spending of a Great American Fortune," at the Tucson Festival of Books. The show is available online now, and will repeat on C-SPAN2 at 2 a.m. ET on Monday. Paul Clark Newell Jr. and I were interviewed by journalist Bill Buckmaster, and we answered audience questions about Sen. W.A. Clark and his youngest daughter, the reclusive Huguette. http://www.c-span.org/video/?318444-3%2Fbook-discussion-empty-mansions.