Confederate Generals A.P. Hill and James Longstreet were baffled. Every move they made, the Union was there. It seemed like someone knew all of their plans. There had to be a traitor in the ranks. But after a thorough investigation, they still had no idea who was acting as a spy and how they were getting the information to the Union. That’s because they never investigated Mrs. Dabney, a quiet Black servant who simply hung out the laundry every day. She was the spy.