Detective Ron News Today

nights >> oh my god, my moms gonna die. >> lisa stabbed. >> the blade was actually bent it takes a lot to bend and i played >> the killer, none other than sabrina. >> i couldnt believe it >> a loving mom murdered by th foster daughter she opened her home to. what no one could understand was why. >> something else had to hav been a play here >> >> indeed, this case wa about to get a lot mor complicated. stories of a diabolical plot brood behind closed doors. >> this is just betrayal, on...

Police are looking for the person they say smashed a police car and personal vehicle parked in their lot with a baseball bat.

We're taking a look at the teams and technology being used to help Tampa Bay area families find answers in several cold cases.

What she was about to reveal would send this investigation hurtling in a completely new and alarming direction. sabrina told the detective, she didnt act alone. >> i couldnt have done something like this if i didnt have another influence. coming up -- sabrina drops a bomb shell, claiming that getting rid of lisa was actually someone elses idea when "deadly betrayal" continues. honey? yeah? i respect that. but that cough looks pretty bad... try this robitussin honey. the real honey you love... ...

>> it turns out the loving care was just what sabrina needed. >> she was going to class, getting good grades. i think sabrina really was thriving in their home. >> which made the news that it was sabrina who had brutally stabbed lisa all the more baffling. >> i still cant see the sabrina that i know being violent towards anyone let alone what she did. something else had to have been at play here. >> the detective was thinking the same way. he wanted to talk to kevin about what that something els...

Same story she told police, the story of a young girl bouncing through the foster care system, always dreaming of a better life. >> i wanted a new beginning. and to put all the past behind me. i wanted that picket white fence, the dinner on the table with siblings and you know something i never had. i wanted that structure of a family. >> so when the knoefels opened their door to sabrina, it was a dream come true. >> my first impression of kevin was caring father, somebody that was willing to, y...

Most unusual cases weve ever come across. police would end up investigating not just who but why. with answers as stunning as they were disturbing. as dawn broke that cold november morning, detective began with his perpetrator, sabrina. >> i first noticed that she was very small girl, very frail girl. >> sabrina started describing the moments leading up to the murder. she had had a migraine, she said, while everyone else slept, she walked into the master bath to get some ibuprofen and that she s...

>> finding out that the foster daughter lisa welcomed into her home ended up committing lisas murder only added to the collective pain and suffering. >> betrayal is the perfect word for what happened. somebody hurting her that she had taken in, i just cant even imagine what she must have been going through. >> as detective ron worked the case, he learned there had been growing tension within the knoefel home right before the murder. and the source of that tension was sabrina. >> she got along gr...

Showered in blood. >> he ordered sabrina to the ground where she was cuffed. he then went to the bedroom where he found lisa on the floor. >> i could barely even see flesh color. it was -- there was that much blood on her. i knew there was nothing i could do. >> the coroner would later determine lisa had been stabbed and cut at least 178 times. sabrinas weapon was a 15 inch bread knife. >> the blade was actually bent. i just started shaking my head because i couldnt -- takes a lot to bend a knif...

>> and the detective learned from texts on lisas cell phone that sabrinas flirty behavior had begun to take its toll on lisa and kevins marriage. kevin was making himself available, too available as far as lisa was concerned. >> you have one actual text from lisa to kevin in which shes saying youre getting too close to sabrina. >> yes. >> in fact, lisa wrote, cut the damn cord. spending too much time with her and less with your real family. thanks a lot. lisa also became concerned about the rela...