CASSVILLE, Mo. -- On June 19, 1972, Christene Nickle Seal disappeared from her home in Lawrence County. Her parents still wait for closure.
Doyle and Trudy Nickle last saw their daughter, Christene, on Father's Day 1972. The next morning, she was gone. They're still looking for clues, 40 years later.
The Nickles volunteer their time to help others at the hospital in Cassville.
"You feel like you are so fortunate when you see the people who are feeling bad. You see them at their worst here," Trudy Nickle said on Tuesday.
But time has not healed them.
"You have to go on. You keep busy, so you don't have so much time to think," Trudy said.
It was a Monday morning when Seal, a 22-year-old wife and mother, vanished from her home near Verona. The Nickles got a phone call from her husband, Linn.