Need some help guys. I am trying to find a book I read as a teenager. Don't know the author or title. It was set in Louisiana and in France. The main hero character is named Pat Strange. It is a classic good vs evil story and denotes some places in Lafayette and Louisiana that are actual places. I am thinking maybe a Louisiana author or someone who did a lot of research here. There was also a Sheriff Vallot and descendants of Marie Loveau.