Taney County investigators know how four people died, but they might never learn why. Autopsies on three bodies found in a burned out mobile home show a woman and a 7-year-old boy were shot. Another boy, who was 12, suffered head trauma. Toxicology tests will show whether they died from their wounds or from smoke inhalation. The person suspected of killing them aparently shot himself in the head either just before, or just after, crashing his car at high speed into some gasoline puimps at a Convenience store. Automatic shutoff valves kept any fire from breaking out at the store.