John and Peg Scobell are the perfect spies. As slaves for most of their lives, they have been treated as invisible people, barely worth notice. Now, with the Civil War marching down upon them, they decide to use their "invisibility" for the Northern cause. They become spies. This thrilling tale is based on the real life of John Scobell, one of the first black spies in our nation's intelligence service. He has no idea that his wife has become a spy in the heart of the Confederacy, and she uncovers information about Rebel submarines that could change the course of the war. But their world unravels when someone begins picking off agents, one by one. In the beginning, John saw the war as a fight for honor, glory, and freedom. Suddenly, for John and Peg, it becomes a fight just to survive. Based on the true story of John Scobell.