Curtis Wilkie, author of "When Evil Lived in Laurel: The 'White Knights' and the Murder of Vernon Dahmer." This is the story of an especially vicious chapter of the Ku Klux Klan, known as the White Knights - their murder of a voting rights activist named Vernon Dahmer - as well as the story of a white citizen in Laurel who was willing to become a member of the White Knights in order to serve as an undercover informant for the F.B.I.