kevin was 15 years old when he walked his mother down the aisle. they moved into bill s home on a quiet cul de sac in seminole, florida, near st. petersburg. a solid neighborhood. good schools. for the first time, kevin had a steady male role model in his life. so how was kevin fitting into the picture here? kevin was fitting into the picture quite well really. he really took to me more than anyone else that diane dated with, she told me that. and, you know, we got along very well. reporter: kevin appreciated bill so much, he wanted to take his name. he wanted his name to be the same as his mom and i. and i was very proud of that. reporter: so, what s wrong with this picture? not much. kevin got along fine with bill, but joining a big family with five kids was a challenge. he didn t always fit in. there was tension, and a lot of it swirled around the new baby of the family, young kevin. you could tell he was raised as an only child because he was all about himself and all a
or telling the truth about the man he insisted killed his wife? his daughter, rebecca, backed him up and attacked kevin in her interview with the cops. he was a little hothead. he would come in and throw his weight around. reporter: like the time, she said, kevin tried to goad bill into a fight at the house, siccing the cops on him. he would puff up and get in my dad s face, screaming for him to hit him, please hit me. i ll call the police, and you ll go to jail right now. it was the classic kinda boy crying wolf scenario, because bill apparently hadn t done anything. it was just kevin trying to get bill in trouble and calling 911. reporter: kevin says he didn t goad bill and made that call because bill shoved him. and things got so bad, bill and diane even took legal action to throw him out. diane told him, kevin, don t push me. you re going to see what we can do to get you out of this house. he didn t believe her. i went to my attorney.
calling and telling the truth. the other person has already figured out the story that they re going to use that s not true. that s pretty rare, and certainly quick and devious thinking by someone. reporter: father and son, one falsely accused of an appalling crime. the other the real killer and a devious liar. the case would be a tough one. it went to veteran homicide detective jim beining. they both immediately accused each other as being the killer. so, you got to evaluate all these stories and figure out what s really going on. i do. it s a difficult case. reporter: first responders found diane kyne s lifeless body face up in her own bed. kevin s loving mother, bill s loving wife, was just 49 years old. it appears that she is died from possible strangulation or asphyxiation. and there s some other things in the room. there s broken glasses at the bottom of the bed and a shoe. maybe most interestingly there was blood.
reporter: the fifth amendment prohibits double jeopardy so kevin can t face charges in this case again. but bill could. i would like the prosecutor to ask the sheriff s office to reinvestigate diane kyne s death. that s silly. i d love to be the defense attorney on that case. there s no way bill kyne would be convicted. because, not only does the evidence not show that, but the defense would be kevin did it. who is kevin kyne? who is this guy? kevin kyne is a name on paper. that man is not a kyne. and he is not my family. so where s justice for diane in all this? kevin did serve some time in prison. and i i don t believe that diane would even want him to serve life in prison for her murder. but in my mind, he should still be behind bars. reporter: but now, kevin s got a second chance at life. he says he s dedicating it to his mother. she s looking down, and she sees that i m maturing. and i am gonna be the man that she wanted me to be. reporter: so, in the end,
were you and your mom close? very close. reporter: kevin was instructed by his attorneys, allison miller and jessica manuele, to talk directly to the jurors. we said, if you expect them to believe what you re saying, you better look them in the eye and tell them the truth. did you ever call your mom a [ expletive ]. i did. did you ever call your mom a retard? unfortunately, i did. we said, kevin, is this true? are you disrespectful? yes, ma am. well then, you concede it all. reporter: a pre-emptive strike, part of the plan to soften kevin and give jurors reason to doubt that an immature, bratty 23-year-old could turn into a cold-blooded killer. what this jury wants to hear is you say you didn t kill your mother. kevin, did you kill your mom? no, ma am. reporter: but evidence of kevin s blood on diane s thigh had always been the defense s toughest challenge. the state s theory is the blood got there once bill and kevin start struggling. reporter: bu