FBI Shoe Print Expert William Bodziak testifies that the footprints leading away from Nicole and Ron's bodies was a Bruno Magli size 12 shoe and the print inside O.J.'s A Bloomingdale's shoe salesman testifies that he sold many pairs of size 12 shoes to O.J. Simpson, but he could not recall if any of them were Bruno Maglis. During the middle of the week, there are quite a few random witnesses such as a former Isotoner Glove executive, a records custodian from Airtouch Cellular and someone from the Mirage Hotel in Las Vegas where O.J. allegedly made two calls to on the night of the murder. Week 22 ended with a battle of the scientists. Population Geneticist Bruce Weir gives very complicated testimony aimed to help put DNA evidence and testing results into context. However, that backfires on the prosecution when the defense gets Weir to admit mistakes in his work and that those mistakes are biased against O.J.