I need a new book to read

I had just finished reading Stieg Larsson's Millennium Trilogy last night; I'm now at a loss of what to do with my free time.

I made the mistake of watching the 2011 The Girl with the Dragon Tattoo movie prior to reading the books; I was unable to use my own imagination for the characters and settings, and pictured the movie instead. That's the main reason why I prefer reading the books before watching the movies, really. I think it takes away a bit of the reading experience.

Anyways, all three books are great, and I was sad to learn that Larsson planned for the series to go on much longer (reportedly up to 10 books), but he passed away before finishing the fourth book. I would really love to be able to read the unfinished books, even just the outlines, but I doubt that would ever be possible. I'm not ready to let go of Blomkvist and Salander just yet.

For my next book, I don't know if I should stick to mystery/crime or if I should try reading sci-fi/fantasy.