reporter: this camera, about a block away from chiquita s office, was working fine. it showed a quiet street the night of the killing. normal activity. what they really wanted was the shot from this camera, which swept right pass chiquita s office door. but bad luck. a recent storm had knocked it out. the camera in front of the office was not working properly on that particular night. reporter: so no picture of a suspect. this wasn t going to be an open-shut solve. but there was evidence to work with. the crime scene technician had taken scrapings from under chiquita s fingernails and sent them off for lab analysis. had she scratched dna material from her killer? they d have to wait on findings. and likewise the clump of hair found in chiquita s hand. did it contain dna identifying the killer? if you re in a fight and and pull someone s hair out yeah. you re gonna find root hairs, hair balls. reporter: but, the lab work was back on the hair sample. there were no roots