I've Been Watching You: The South Louisiana Serial Killer"Rigor mortis had set in by the time police arrived," Special Prosecutor Tony Clayton told the jury, watching their eyes as they viewed the photograph of the bloodied arm of Geralyn Barr DeSoto. Geralyn's clenched fist, frozen in death away from her body, held her secret. "Geralyn was trying to tell us something. She was telling us how hard she fought. She was telling us who her killer was. 'Right here, ' she said. 'Right here I have the killer. Just