As noted here, this book lays it on a tad thick, including some suppositions. The basic idea that the books are deeper than one might think is not novel, though you might think so at times. Still, a lot of interesting stuff, especially if taken with salt. She focuses on the six completed novels, so Lady Susan et. al. are barely noted. A bit on Sanditon. The stuff in Jane's voice (each chapter starts with a passage with this conceit) seems a tad forced.