Everything is not what it seems. I guess I watch too much tv. I've always been under the impression that forensic investigations and death investigations were done in a highly scientific and professional manner. As it turns out, the reality is that throughout most of America the position of Coroner is an elected position. This means that the person doing the investigation could have little to no experience at all which could then lead to a misdiagnosis on the possible cause of death. Think of the possible consequences this could have on a murder trial pending in court or a death penalty case.
Post Mortem  is a one hour documentary that investigates how often this happens. Prepare to be shocked!