Nineteen years ago, Investigator Gerald Couch began his work on a case involving a 19-month-old beaten and killed by his babysitter. “It was a child abuse case so horrific that it shocked the conscience,” Couch said. Now Hall County Sheriff Couch and other Gainesville-area child advocates gathered Monday at the memorial garden commemorating the death of Austin Chance Sparks and others who died as a result of child abuse.