Anyone have any good book suggestions for me?

I am completely running out of new books to read this summer. I'm 14 and pretty well read. I really do not enjoy the Twilight craze, or really any romance novel aimed for people my age. I have read the Percy Jackson books (and The Lost Hero and both of the Kane Chronicles books), the Hunger Game trilogy (though I wasn't really a fan of the last one, for different reasons than most fans), and that's been pretty much it for new books this year. I tend to lean more toward Sci-fi books than fantasy, though I have read quite a few fantasy books, and I also have a love of good mystery novels, more whodunits than the thriller/suspense most mysteries tend to be these days.