At the height of the Civil War, Confederate President Jefferson Davis became a very paranoid man. He suspected a mole somewhere in his government, leaking information. He was right – and wrong. There was, indeed, a mole. But it was a servant at the Confederate White House – a freed slave with a photographic memory who slipped the North valuable secrets from Davis' desk. "This is a humdinger of a tale," said UVA historian Elizabeth Varon, who detailed Mary Bowser's life and spy capers in her 2003 book, "Southern Lady, Yankee Spy."