jacqueline maria hagen is the author. >> guest: thank you. >> is there a nonfiction author or week you'd like -- book you'd like to see featured on booktv? send us an e-mail to c-span@c-span.org -- booktv@c-span.org or post to our facebook page. >>> karen abbott recounts the covert experts of four women in civil war to send privileged information to southern generals. this is a little under an hour. >> okay. i'm thrilled, i'm thrilled to be here with abbott. i love her books, i love all of her books. sin in the second city, which i love, you take us and share with us this entire other view of chicago through the eyes of the two most famous american madams ever. in "american rose" we learn about this american icon, gypsy rose lee who really, you know, hasn't been explored the way that you explored her. so now with "liar, soldier, spy," you hit on several things i personally adore. we have unexplored american history, espionage and women -- [laughter] with some real spines, really adventurous, incredible women. tell us a little bit about what this book is about. >> well, i'll tell you the