In 1968, Barbara Mackle, 20, was abducted by Gary Krist and Ruth Eisemann-Schier. Mackle was buried in a trench inside a box, which had an air pump, a battery-powered lamp, water, and food. When they received the $500,000 ransom, they gave vague directions to Mackle’s burial site. Mackle was rescued alive. She had spent more than 3 days underground. Krist and Eisemann-Schier were arrested and convicted. Eisemann-Schier served 4 years in prison, Krist served 10 years.