In 2008, Fennell pleaded guilty to charges of kidnapping and improper sexual activity with a person in custody while he was an officer in Georgetown, Texas, after a woman he detained, when responding to a domestic dispute call, accused him of rape. He was sentenced to 10 years.A former inmate who served time with Fennell said in an affidavit filed this month that Fennell confessed to the killing of Stites.