extra heidi and conrad truman had a special bond envied by others. but one tragic evening, heidi was on the floor clinging to life. conrad s behavior in the hours and minutes that followed would be highly debated for years. detectives would focus on the grieving husband. but were they looking at the wrong man? here s josh mankiewicz. reporter: they seem so incongruous, the soaring majesty of utah s wasatch mountains, and the story of a beautiful woman, struck down in her youth. it was a lot of things. tragic. crushing. stunning. but was it an accident? or a suicide? or a murder? police felt they knew, but as most cops will tell you, both the evidence and the jury have
for sure, police were wondering about her husband. after all, conrad truman was in the house when heidy was shot, and there was no evidence of an intruder. i felt like they thought i did something. reporter: soon after he arrived at the scene, sergeant bill crook did begin to have his suspicions. we re telling him, conrad, back off. the paramedics are here. back off. and he wouldn t. reporter: he was what, moving around? yes. reporter: keeping paramedics from being at the body? yes, sir. reporter: there were other scenarios that needed to be explored, like accident and suicide. that s where detective tom wallace came in. there had been a number of theories. we obviously are going to exhaust them. that s going to happen. reporter: the medical examiner didn t make wallace s job any easier. his preliminary finding heidy s manner of death could not be determined. so wallace tackled each theory one by one. accident seemed hard to believe.
heidy decided to take a bath. conrad said he went to the kitchen to get something to eat. as he fixed himself a sandwich, he said he heard a noise coming from the direction of the bathroom. it was like the new year s poppers or the halloween poppers where you can pull two strings or you can pull one and confetti and stuff comes out. reporter: that s when conrad said he turned and saw heidy standing there in the hallway naked. she wasn t talking. she wasn t talking at all. she was coughing, she was heaving. reporter: and she was bleeding? she was bleeding out of her mouth and her nose. i needed to call 911 immediately. 911, what city is your emergency? utah. reporter: an unimaginably shocking scene. heidy on the kitchen floor in a pool of her own blood. conrad on the phone pleading for help. there s so much blood. if you don t get here right now, she s going to die. i don t know what happened. i really don t know what happened. oh, my god. it was bad to begin with and
reporter: conrad s sister colette couldn t believe it when her brother first introduced heidy to the family. i was actually really sort of surprised when i first met her, like how did he hand that girl? they just seemed to be such a great match. reporter: you saw love and chemistry there? oh, it was almost awkward. they were definitely an enviable couple. reporter: another year later came the wedding. it was amazing. we went up on a lift, a chair lift, then all of the guests left down these slides. so it was just so them. they said their vows, and he s kind of doing this champion pose like he was just everything was right with the world. reporter: the enviable couple was just starting out with a future as bright as their smiles. until, that is, a sunday evening in september 2012, three years after the trumans were married. tell me about that day. that day was like, just like any other day. reporter: as night fell,
did heidi not know her father or who he was, did that make her depressed or sad? no. conrad insisted heidi would never commit suicide. i think something shot her or something because she would never shoot herself. she would never shoot herself. taylor argued it was only after suspicion against conrad had mounted that he changed his tune. nobody can identify a shooter based on the results of this test. that is major limitation of this test. the defense attorney $ answed saying conrad had pleaded with police to confirm he had no