There are 2 books in the Women Spies in the Civil War series.
The Women Spies in the Civil War series does not have a new book coming out soon. The latest book, Underground (Book 2), was published in September 2018.
The first book in the Women Spies in the Civil War series, 355, was published in December 2017.
The Women Spies in the Civil War series primarily falls into the Historical genre.