much of his time he spent on a lathe. >> this was suspicious since metal fragments were found on both stephanie dittrick's body as well as arlene jensen's. with a search warrant, investigators found metal shavings on ackley's jeans, in his car and in his workplace. when tested with energy dispersive x-ray spectronomy, scientists discovered that the shavings from gary ackley were the same as those found on both murder victims. but ackley's lawyer said this proved nothing. they claimed it shouldn't be surprising the metal shavings were the same because ackley knew both victims and could have transferred those particles weeks earlier. so investigators turned to the beige fibers found on the jacket near his mother-in-law's body. >> it was an infrared photospectrometer which identifies this polymer fiber as