Jim Popkin, former senior investigative producer at NBC News, got access to important sources as well as classified and private documents for his new book on the Ana Montes case, Code Name Blue Wren.  Montes helped shape US Cuba policy…while spying for Fidel Castro.  It’s a true tale with some unexpected and dark twists.  Jeanne had an opportunity to moderate a conversation with Jim at the Gaithersburg Book Festival.