to find out, investigators contacted richard monroe, a well-known forensic geologist.crete and cinders were found with karyn's body. could he tell if they came from the slovers' car lot? both samples were placed in a scanning electron microscope and hit with high-energy radiation. >> in a vacuum in the sem, the darkness in the chamber, there's no light source. the only light is the x-ray. >> this enables the images of the samples to be magnified up to 5,000 times their actual size. visually, the samples looked similar. monroe then ground the samples into a powder and bombarded it with x-rays to identify the chemical makeup of the samples. monroe concluded that the material found in the bag with karyn's body and the material from the car lot were similar enough to raise suspicions, but investigators needed more than that, and to get it, they turned to an unlikely source, the united states army. >>> more than two years after karyn slover's murder, investigators now suspected that her ex-in-laws were involved. the motive, karyn's former mother-in-law, jeannette, wanted so