Well, I don't do crime fiction, so I can't think of any crime fiction theorists off the top of my head, but maybe you can get away with genre theorists? Unfortunately, I've been focusing very hard on advanced, so I also can't think of many genre theorists off the top of my head, but the one that comes to mind is Carol Laseur, but that's because that's the first one I used in my essay. Sorry if I wasn't more helpful =/







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