>> you got to get in there! >> please don't hurt me. i have a baby in the house. i have a baby in the house. please don't hurt me, please don't hurt me! >> police! >> get off that bed! get off that bed right now! >> 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.