CNN Forensic Files March 15, 2015 04:07:00
Keary renner admitted that she fought with her roommate, devon guzman, the night before devon's murder. but keary denied killing her. in their apartment in the shower stall, investigators found devon's car mat. it appeared to have been recently washed. investigators sprayed luminol in the shower stall underneath the mat, and it glowed. it was a positive presumptive test for the presence of blood. dna tests confirmed the blood in the shower stall was that of the victim, devon guzman. >> so our thinking is, well, could the murder have happened in the shower? and could it have started, you know, ...