From William Martin, the New York Times bestselling author of The Lost ConstitutionTreasure hunters Peter Fallon and Evangeline Carrington are heading for adventure in Washington D.C., the sleek, modern, power-hungry capital of America? and the crowded, muddy, intrigue-filled nexus of the Civil War. Their prize? A document of incredible historical importance and incalculable value: Abraham Lincoln's diary. What if Lincoln recorded his innermost thoughts as he moved toward the realization that he must free the slaves? And what if that diary slipped from his fingers in 1862? When a recently discovered Lincoln letter suggests that the diary exists, Peter and Evangeline must race to uncover a document that could shake the foundation of Lincoln's legacy.