mother. she was the most amazing woman i had ever met in my life. and then, suddenly, one day, she was gone poisoned by carbon monoxide. he was like i couldn t get a pulse, i couldn t get a pulse. her husband blamed of faulty water heater, police blamed him. you don t think this is an accident? no. there was one problem, and it was a big one, no one could figure out exactly how he might have done it. he s an expert in gases, he s analyses urologist. murder or an accident. did you kill your wife? hello, and welcome to dateline, hundreds of americans die every year from accidental carbon monoxide poisoning, but according to police in ohio, one of those deaths wasn t an accident, it was murder, and they say if anyone would know how to use a deadly gas to murder someone, it was their prime suspects. here is kate snow with deadly exposure. reporter: he s come back to where it all began, to the town, the streets he knew so well, remembering the old times
life. and then, suddenly, one day, she was gone. poisoned by carbon monoxide. he s like, i couldn t get a pulse! i couldn t get a pulse! i couldn t get a pulse! her husband blamed of faulty water heater. police blamed him. you don t think this is an accident. no. there was just one problem. and it was a big one. no one could figure out exactly how he might have done it. he s an expert at gases. murder or accident? did you kill your wife? hello and welcome to dateline. hundreds of americans die every year from accidental carbon monoxide poisoning. according to police in ohio, one of those deaths wasn t an accident. it was murder. they say if anyone would know how to use a deadly gas to murder someone, it was their prime suspect. here is kate snow with deadly exposure. he has come back to where it all began, to the tune, the streets he knew so well, remembering the old times when life was simple, love was young and the future held so much promise. taki
three years to defend himself. and all the time, his sons stood by him. and against their mother s family. when you have your family setting the back, trying to destroy your family, what you have left, it s hard. it hurts. it was time now for the defense to present its case. time for defense attorney, chris mcdowell, to show the jury a different version of the man who stood accused. it is opening argument, mcconnell said that mark was, above all, a devoted christian, who would never commit murder. mark did not believe it was good enough just to profess the words of christ or go to church, he felt he had to live it. mark wangler s defense came down to this. his wife died in a horrible accident. prosecution never proved the crime was even committed. ladies and gentlemen of the jury, dr. mark wangler is innocent. this case has been brought as a
i said, where is he? he was out, he brought his guitar and came in set on the back of the truck, of his vehicle. and was strumming guitar, singing to kathy. serenading her? yes. yeah. they started dating. a few years later, 1977, mark and kathy got married. he was 21, she was 18. they had their wedding in a catholic church. by that, mark had embraced an evangelical christian faith. they were the happiest to people i ve ever seen. it turns out the quiet young man from fort worth, recovery, had big ambitions. he wanted to be a doctor. kathy worked to put mark through med school. things were tight. were you happy in those years? yeah. you had two boys. correct. nathan and aaron were born right as mark was beginning his practice. we get hugs and kisses every
morning and every night before you go to bed, when you look for school or even if you are going out to hang with your friends, forever. we always kiss and we were very close family. they moved to lima in 1990. by that, the christian faith had become very important to mark wangler. they join grace baptist church. what was it about this particular church that you and coffee both thought was a right fit? two things. one of them is if all the people there for friendly and the pastor was correctly preaching god s word and the second thing is that they had a children s program, a youth program. mark and kathy and the boys. at the time, mark s medical practice was growing. merry christmas! after those early years of doing without, the family was now well off. they took the boys on vacations, camping, europe. kathy went back to school, did some substitute teaching. life seemed to be going well