Masterpiece: Poldark on PBS. If you are not watching - and/or reading Ross Poldark: A Novel of Cornwall, 1783-1787 by Winston Graham, you have no idea what intrigue/adventure/romance awaits you! And luckily for us, there are many more books where that came from. (I believe there are 12 in all but if I am incorrect, please let me know.)
The setting of the show reminds me of The Winter Sea by Susanna Kearsley, with its angry seaside bluffs and air of passionate angst that runs as an undercurrent through much of the story. I cannot speak to the book yet, as I'm only about a chapter or two in, but I will tell you this: as with most books (except Outlander, of course!) small details may be overlooked in the TV show and you'll have a lot of fun digging them up in the books.
Already reading/watching? Let me know your thoughts in the comments!!