 An 82-year-old woman appears to have committed suicide by overdosing on painkillers, but Dr. G finds evidence that suggests that she may have died of an heart attack. A former homeless man is found dead in his home the morning after complaining of a headache. Dr. G must find out how he died, but the 50-year-old man has no documented medical history. A 35-year-old woman dies in her sleep, and the hospital has no answer as to why she died. Dr G. works for three months to find a cause of death for her distraught family.