Red Knife By William Kent Krueger. Number 7 in the Cork O'Connor mystery series. This newest book finds O'Connor, the charismatic private investigator caught in the middle of a racial gang war that's turning picturesque Tamarack County, Minnesota, into a bloody battlefield. In Red Knife, Krueger gives his readers a vivid picture of racial conflict in small-town America, as well as a senstivie look at the secrets we keep from even those closest to us and the destructive nature of all that is left unsaid between fathers and sons, husbands and wives, friends and lovers. HC. 310 pgs.