Crimes of the Mentally Ill

Lisa Montgomery would meet Bobbie Joe Stinnett in an on-line chatroom called "Ratter Chatter" under the pretext that she wanted to purchase a rat terrier puppy from her. But what she really wanted from the pregnant Bobbie Joe was her baby. 
Lisa would arrive at the Stinnett home and strangle the young woman into unconscious before cutting out the baby from her stomach with a kitchen knife.