The assassination of Abraham Lincoln changed the course of American history. Every school child knows that President Lincoln was shot by John Wilkes Booth, an actor, at Ford's Therater. But it seems no one is taught that this assassination was a true conspiracy. The initial plan of Booth and his co-conspirators was to kidnap Lincoln, but the plan was then changed to the simultaneous murder of the President, Vice President, and Secretary of State. Few people know that eight people were tried by the United States government, found guilty, and four of them were subsequently executed for...