. >> this cousin, patrick nash said carla asked to borrow his gun, a .38 caliber revolver for protection tells patrick that there has been recent break-ins there at her house, that she is concerned for her safety. >> patrick said that three days before the murder, he gave carla his gun loaded with five bullets. he also gave her a hunting knife. three days after the murder she returned the gun but not the knife. and the chamber of the gun was empty. >> patrick asked carla, hey, what happened to the bullets in it? she told him, i went target practicing. >> the gun was given to experts. >> it told me that weapon was the weapon that killed avis banks. >> but this did not necessarily put the gun in carla's hand. so investigators looked again at the shoe impressions from the crime scene. they assumed the impression was made by a man's shoe which would have been a size 8. but it also could have been a woman's shoe, a size 10. with the warrant, investigators searched carla's apartment. >> we went through the master bedroom closet. and carla had probably upwards of 100 pairs of shoes in the close