CNN — On their deathbeds — her father’s in the 1960s and her mother’s in the 1980s — Ovell Krell’s parents made her promise she’d never stop looking for her brother.”Will you find Owen and bring him back?” she recalls her dad asking.”I’ll try until the day I die, Daddy,” she replied.After more than seven decades, the 85-year-old has found Owen. She hopes to soon lay him to rest at the Auburndale, Florida, cemetery where her parents are buried. Digging up answers to a 50 year mystery Florida to exhume bodies at former school Unmarked graves at school to be exhumed Boys’ graves might hold answersHer mom, after all, instructed her, “Put him with me and daddy.”George Owen Smith was sent at age 14 to the Florida Industrial School for Boys in 1940 for car theft. Krell never saw him again, and her family was told he died of pneumonia after running away from the school and hiding under a house in town.The school, located in Marianna, about 65 miles west of Tallahassee, is now known as Arthur G. Dozier School for Boys. When it closed in 2011 for budgetary reasons, it capped a chilling, 111-year legacy of brutality.