>>> no one knew why roxanne ellis and michelle abdill were murdered. the motive didn't appear to be robbery. blood patterns indicated the women had been shot inside the truck. four shell casing from a .25 caliber pistol were found near the bodies. there were no foreign fingerprints inside the truck but there were several overlapping shoe prints from a man's shoe. >> this was on kind of the chrome-plated bumper area that had kind of a dirty grime, kind of oxidized layer on it. and when the individual stepped on the bumper, he left a negative impression. >> the autopsies revealed the women were killed the day they went missing, and there were no signs of sexual assault. the medical examiner found bluish-green polyester fibers in and around the fatal wounds. >> either the gun was fired through an item like a blanket or some intermediate object or intermediate target and then fired into the victims' heads. >> and there was a gash in roxanne's calf near the taped bindings, which suggested the killer bound the women inside the apartment, led them down to gar