Alias Island (Mark Oberlin Mysteries)

When Nelson and Patricia Whitdown retired to Hadaway Island from the Poconos they never dreamed theyd be surrounded by convicted felons who plea bargained themselves out of their own identities, and now have nothing left to lose but their lives. F. B. I. Special Agent Mark Oberlin, an organized crime expert, finds himself hunting down the elusive enemy who has begun to murder these protected witnesses on the splendid ocean beaches and championship golf courses of what the guys back at HQ have nicknamed Alias Island.