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
from ohio. his old house is still there. history and brother-in-law on the family hardware store now. it was a strange homecoming. so much at stake. he seems so relaxed. i ve been working here since 1970. okay. enough reminiscing. mark wangler wanted to see his mother, a chat and then goodbye. was it just for now four for good? i hope this isn t the last one. all right. i m pretty confident. i am to. i m feeling pretty good about it. even on this night before closing arguments, custer and mark fell to their routine, like choir practice at grace baptist. mark wangler never testified on his own behalf. would it matter? he was as quiet as ever and so hard to read. but not esther. she was a wreck, wondering what