The murder of Abraham Lincoln set off the greatest manhunt in American history. From April 14 to April 26, 1865, the assassin led Union cavalry and detectives on a wild twelve-day chase through the streets of Washington, D.C., across the swamps of Maryland, and into the forests of Virginia, while the nation, still reeling from the just-ended Civil War, watched in horror. A Confederate sympathizer and a member of a celebrated acting family, John Wilkes...