"Who's There? The Story of a Spy in the Civil War" is a fascinating book written by the author B. K. Benson (Blackwood Ketcham). This book tells the story of a spy in the era of civil war, where the protagonist finds himself in danger and is forced to make dangerous decisions in his struggle to survive and defend his own beliefs. The author successfully combines historical events with fiction, which makes reading even more interesting and exciting for anyone interested in history and the spy genre. The book "Who's there? The story of a spy in the Civil War" will leave an unforgettable impression on everyone who decides to open its pages.