did tom fallis kill his wife ashley in a fit of violent temper or what? ot kill his wife and mother of their three children. ashley fallis committed suicide. keith morrison: remember how the prosecution talked of ashley's happy frame of mind? that ashley was a kind of lie said the defense. ashley fallis was a beautiful woman, but she had a terrible pain inside. she was mentally ill. keith morrison: the defense put one of ashley's close friends on the stand. what did you know of ashley having a mental illness? i knew that she was on medications. we spoke pretty in-depth about that. keith morrison: but even with medications the friend testified ashley had trouble controlling her emotions. what kind of mental health issues did you observe ashley fallis to be going through? depression, mood swings, impulsive behaviors. keith morrison: in fact the defense argued ashley was so depressed the summer before she died she wrote this letter to tom. i have so much pain on the inside, i can no longer take it. i'm sorry to do this to you and the kids, but i find myself n

ashley's family? can they just accept this and go on? i don't think they'll ever accept it. to say that they were distraught would be an understatement. they, i think, truly believe that tom fallis killed their daughter and they are never going to let that go. keith morrison: an idea once so deeply ingrained, true or not, will not go away. and tom fallis and his children make a life as best they can. that's all for this edition of dateline. i'm craig melvin. thank you for watching. [music playing] hellsomeone just sucksing, anthe life out of you." and tells you your dream life isn't going to happen. that wedding you're planning, you don't get to have it. evil exists. evil dwells in people. andrea canning (voiceover): it was a night like this, just before halloween, a killing that still haunts. i found him just lying there and couldn't feel a pulse. andrea canning (voiceover): a young dad engaged to be married, dead on the ground. they determined that it was a murder. andrea canning (voiceover): and here's what made this mystery so chilling. the possible suspects were all in costume. the cowboy and the penguin, everybody's dressed as somebody else. how are you going to be able to