A ransom note arrived three days later, demanding $20,000 for Charley's return. The city was about to host the United States Centennial celebration, and the mass panic surrounding the Charley Ross case plunged the nation into hysteria. The desperate search led the police to inspect every building in Philadelphia, set up saloon surveillance in New York's notorious slums, and begin a national manhunt. With white-knuckle suspense and historical detail,...