In 1968, heiress Barbara Mackle was buried alive in a ventilated box for 83 hours after two strangers kidnapped her from an Atlanta motel. Her captors, Gary Krist and Ruth Eisemann-Schier, demanded $500,000 from her wealthy father, even posing as police officers. She survived underground, suffering only dehydration. Her rescue unfolded as a ransom drop went wrong and a fingerprint analyst cracked the case. Her story became two TV movies.