Watch Hatfields & McCoys Online Free. Kevin Costner and Bill Paxton star in this all-new three-part miniseries about the legendary and deadly family feud that broke out in the backwoods of West Virginia and Kentucky after the Civil War. The clash of clans begins when a Hatfield murders a McCoy, and Randall McCoy’s daughter and Devil Anse Hatfield’s son begin a tempestuous, forbidden love affair. (Source: History Channel)