Wednesday on the NewsHour, more than 20 states appear to have reached a comprehensive settlement with Purdue Pharma, manufacturer of OxyContin. Plus: Results of the N.C. special congressional election, a conversation with Mark Sanford, the Bahamas after Hurricane Dorian, how the art world is using blockchain, reports of a U.S. mole in the Kremlin and remembering September 11th, 18 years later.