On May 12, 2002, police in Conway, Arkansas received a 911 call that two people had been found shot to death at a private residence in an affluent area of town. Upon their arrival, they found two men lying dead in the foyer of the home, having sustained gunshot wounds to the back of the head. The positions of their bodies — both were lying face down, with their palms upward — was strange. The presence of a white towel on one man’s head and white towel fibers on the other let police know the killer had used the cloth to muffle the sound of the gunshots. They also found a baseba...