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
and the ohio state criminal lap refused to do the testing. it was too unreliable. these people in wisconsin set, we ve never done it before, but we can try it. modal attacked the lab s data, the record keeping and its expertise. prior to your work involvement in this case, you had no previous experience in conducting analysis on ductwork, did you? no, we ve not done ductwork before. and then, this question. did the lab consider other sources of soot? you would agree that candles are potential source of such, correct? yes. that is correct. candles. the wangler house was full of them. according to testimony from several witnesses like side, aired wangler. maybe that is why the heating ducts were full of soot. do you recall if your mother ever burned any [inaudible] all of the time. we had tons of candles. remember those soot stains coming out of the registers in