shop in amarillo. one before the murder, two the day after the murder. sold by none other than dave shepard. >> in termsms of demeanor he didn't strike you one way or the other, it sounds like? >> not at all. >> couple days later he's on the front page of the paper. >> i was blown away. >> reporter: but dixon's lawyers have an explanation for all of first the gun used. they say shepard stole it from dixon's home. defense attorney frank sellers shows me where. >> they came in here. they're picking out a cigar to smoke. and shepard opens this drawer here, and it's a gun. >> so that's how shepard knew a gun was in that drawer. >> exactly. >> reporter: and the silver bars?