it was her friend, dawn lavender. but what was dawn's motive for murder? once again, here's keith.lled, sheriff ellis and corporal boyd drove to the wire factory where dawn lavender worked. she was halfway through her day shift. and they told her, she was under arrest for the murder of her friend, teresa mayfield. she first wanted to know why we was arresting her. then, when she got to the jail, she said, this was wrong, that we made a mistake. keith morrison: (voiceover) the corporal and the sheriff were only too happy to explain to assistant da tim evans how one clue to another and eventually an inescapable conclusion. but prosecutor evans had questions, pointed ones. >> prosecutor evidence pointed to one. >> it was going to be difficult it. it >> where was the murder, where was even one single -- [inaudible] we don't have anything -- >> as far as evidence, maybe she had no reason. so this again. [inaudible] [inaudible] on [inaudible] an on [inaudible] >> but that could've been just gossip, mind you. from a jailhouse snitch who couldn't back it up. >> she was kind of in a jam her