used. so, this possibility, however remote, could not be eliminated. therefore, the medical examiner did not change the manner of his death to homicide. >> i'm sure that there will always be some well-placed suspicions surrounding mr. augustine's death. >> for now, chaz higgs is in prison because two emergency room nurses made a split-second decision that foiled his well-laid plans. >> but for the high-tech testing methods and the forensic technology available, i think this case would have been a mystery forever. >> this whole case was based on forensic evidence, and had it not been for the hard work of the fbi and for the diligence of the detectives involved and for