At the end of the summer of 1859, twenty-two-year-old Peachy Quinn Harrison went on trial for murder in Springfield, Illinois. By now a veteran lawyer, Abraham Lincoln was hired to defend him, but as Dan Abrams and David Fisher reveal, the case posed painful personal challenges for this presidential hopeful. The murder victim had trained for the law in his office, while his accused killer, the young man Lincoln would defend, was the son of a close friend and loyal supporter. And to win this trial he would have to form an unholy allegiance with a longtime enemy, a revivalist preacher he had twice run against for political office.