>> as summer slowly turns to fall, death continues its familiar march. bodies arrive at the morgue and leave again. some deaths are resolved immediately. others must wait their turn. two months after the death of ann palmateer, the toxicology results are in. her death had nothing to do with an accidental drug overdose and everything to do with her enlarged heart. >> turned out that the toxicology showed low levels of an antidepressant, celexa is the trade name. the levels were very low and wouldn't have played a role at all. she died of what we call hypertensive heart disease, an enlargement of the heart, generally because of high blood pressure. she's also an obese woman and that certainly would have played a role on her underlying heart disease. >> final diagnosis hypertensive