I recently finished reading the Phantom of Pemberley by Regina Jeffers. As far as spinoffs go, this was pretty good. It was literally a crazy whodunit, and that's all I've got to say about that aspect ;) The story itself, I thought was clever. The only thing that reeeally annoyed me was the author's obsession with what I've been calling the Darcys' "conjugal felicity." Granted, it was tactfully written, and sure, they're newlyweds, but come on! For the love of everything good and holy! Simmer it. We're reading a murder mystery, but sheesh. Again, though, it was tactfully written and so I can't say that it ruined the story for me. I just got annoyed with it. Anyway... other than that, I would definitely recommend it to anyone who loves the Jane Austen genres.