get on the ground. >> he has a knife. >> police catch deric allen. melissa and her baby daughter are both safe. >> she could have been killed. i mean, without question. if she didn't stay on that phone, absolutely, she could have been killed. >> when melissa's dad first hears the 911 call, he's overwhelmed with emotion. >> i've never heard anything like that in my life. i picture her laying on that bed, with this maniac on top of her. you can only assume what might have been happened, but it wasn't going to be anything good. >> in the courtroom, margalia says allen appears to have no remorse, and hearing his daughter's voice on that heart-wrenching 911 call again is too much. >> i just said, the hell with it. and i tried to reach him. and unfortunately, i didn't. i came within probably a foot or so, and got tackled by this middle linebacker bailiff there. he hit me around the waist and i fell to the ground and he was on top of me. so, i could picture myself really doing some serious harm to him, so maybe it's a blessing i didn't. >> in 2008, deric al