When the 20-month-old son of aviator Charles Lindbergh was abducted from the second story of his New Jersey home, the key clues were a ransom note and a handmade ladder. The case captured the public’s attention, particularly when the child’s remains were found two months later despite a $50,000 ransom payment. Authorities linked the ladder to German-born carpenter Bruno Richard Hauptmann, who was executed in the electric chair for the crime.