Rebecca E.F. Barone is quickly becoming one of my favorite narrative nonfiction authors. I, and many of my students, have been captivated by many of her books and “Double Crossed” is sure to be another. I read it in one sitting and found it to be an easy to follow, engaging, and informative read. The tension of spycraft and double agents compelled me to continue flipping pages regardless of the fact that I knew D-Day at Normandy was the turning point in the war. Barone wrote the spies as real people and I cared needed to know their outcomes. Well researched with great source material. .