you can't discount that. >> reporter: the deeper moffat and taliaferro got into the case, the more itas self-inflicted. they believe the head wound, a contact wound, ruled out homicide. >> a contact gunshot wound to the right tem approximateple ar common site of self-inflicted gunshot wound that there were. >> reporter: moffat and taliaferro decided to take their findings to the m.e. hoping to sway his ruling on the manner of death once again just as police did prior to conrad's arrest. >> we gave him a bunch of information, then he, on his own, with his investigator, went to the home to look at it. >> reporter: and the result was just what they'd asked for. heidy truman's manner of death, once undetermined, then a homicide, was now officially, once again, undetermined. it was manna from forensic heaven. how often do medical examiner's change their findings and then change them back? >> i've never had a case where this has happened ever. >> reporter: it took another year, but conrad truman's conviction was overturned, and he was granted a new trial. >> i never even thought that was ev