When Char refuses, she is taken off the flying rotation and given an alternate assignment. She is assigned to work undercover in a plant that builds aircraft, and that has been experiencing sabotage and accidents. Char is to room with an FBI agent named Ellie, and they work at riveting plane wings while trying to discover the spy responsible for the problems. People start to die, both plant employees and women pilots, and the book revolves around the investigation until the spy is captured at the book's climax.
This book is recommended, both for mystery fans and for those interested in World War II history. While I'd heard of the sterotype of Rosie the Riveteer and the work these women performed, I had never heard of the WASP, and the women who served their country in this fashion. I found the history as interesting as the plotline and welcomed the chance to learn more about a time that helped lay the groundwork for the women's liberation movement in the next generation.