Retired agent's career shows Pittsburgh-area crime history

After Joseph Cornelius confessed to killing 11-year-old Scott Drake and putting the boy's genitals in a trash bag, he told investigators he would show them the spot on the Ninth Street Bridge where he tossed the bag into the Allegheny River. So FBI agent Tom Carter walked Cornelius onto the Downtown span one day in late 2000, flanked by the late Pittsburgh police Cmdr.