2Gives readers a thrilling, behind-the-scenes look into how Civil War spies gathered information for the Union and Confederacy. Learn about the tools that daring spies used during this conflict, and how spies such as Harriet Tubman and Rose Greenhow risked their lives for the causes they believed in. Additional features include a Fast Facts spread, critical thinking questions, a phonetic glossary, resources for further study, and an index.