Most books considered “unfilmable” are so considered because of their form. Rather than a cohesive through narrative, such that easily translates into narrative cinema, they tell circuitous tales from multiple perspectives, shift genres, or provide stream-of-consciousness so constant or abstract that attempting to place it up on the screen becomes a near impossibility.
But never tell a director that it’s impossible to make a movie out of something, because they’ll probably go right ahead and make it just to prove it can be done. Sometimes the results are works of art, and sometimes round failures, but the more difficult the book, the more fascinating the film.
So, on that note, here are 6 books that were considered unfilmable, but were still subsequently made into films.