a hand print in blood. >> it was a crime of passion. >> there's a lot of anger involved in this. >> but that handprint doesn't belong to the man police put in prison. >> the anger just surged through me. >> now a mother turns detective. >> her words to me, i'll never forget, were i just want to know what happened to my daughter. >> join in as she hunts for a killer and searches for the truth. >> i wanted to put my fist through the tv. >> and just wait till you learn what she found. >> it still brings the hair up on the back of my neck. >> the confession. welcome to "dateline," i'm craig melvin. she'd found a job and the new apartment. then angie was stab bed to taet in her bedroom within a local admitting he was one of her killers. a griz lee tail captured on