A convicted child murderer is set to be released from prison this Saturday, even though Franklin County Prosecutor Ron O’Brien opposes his release. Robert Wells was sentenced to 25 years in prison in 1988 for stabbing and killing 14-year-old Barbara Sue Caulley. But because voluntary manslaughter could not legally be considered a sexually based offense in 1988, Wells will be set free Saturday without having to register as a sex offender.