Much better than it had any right to be, but the reader's enjoyment of it will depend on how interested they are in very well-done fanfic of Jane Austen's life as a murder mystery detective. The period language and manners were really excellent (except for the parts where Jane had somewhat unlikely adventures) and it's obvious that the author knows a LOT about Jane Austen's real life. Anachronisms are a huge bug-bear for me and really they were absolutely minimized here, only really coming up when Jane had to do something unladylike because, well, she is investigating a murder. But the author did her best to minimize and mitigate these incidents, and found ways to make Jane's excuses for doing these things seem almost reasonable.
There were quotes throughout that I recognized as Austen's, often attributed in footnotes - while still maintaining the fiction that this story isn't fiction. I enjoyed imagining that I was privy to her domestic life as, no doubt, described in her actual letters. I found it fun. But I can see that if you knew enough about Austen to really see all the knowledge the author is bringing to bear (a lot!), that you might also think that the mystery aspect is a bit ridiculous.
And yeah, I wasn't really interested in the mystery plotline. It involved the last-minute introduction of the provisions of a will to bring everything together, and I couldn't really care. I can see how it would be difficult to bring any mystery plotline to bear in the scope of Austen's actual life, so I went with it.
This is book six, and I may well go back and read the others. Apparently she is acquainted with some kind of dashing man who works in intelligence, which may well be outrageously entertaining? I can see the author wanting to give Jane the kind of adventures she didn't have in life.
Also kind of hilarious was the clear reliance that the author put on Patrick O'Brian for the naval flavor of the book. It makes sense to have some naval themes in a series like this, as two of Austen's brothers were indeed captains in the Royal Navy. But for heaven's sake, Sophie Aubrey makes a cameo!
The character of the murder suspect was heavily reliant on Jack Aubrey, even to the extent of being "Lucky Tom" (instead of "Lucky Jack"),being rumored to like the ladies, and having views on gunnery to "go right at 'em." And the naval surgeon character was, similarly, obviously modeled on Stephen Maturin. There were also intimations of a Maturin-like character working for the Admiralty. It was done with such love that I could hardly be too mad about it, though it was a bit astounding to read such things as Jack Aubrey's phrasing on views on the timings of broadsides as obviously lifted from O'Brian. Like there were at LEAST 10-15 times reading the book where I was like, "yes, she got that from O'Brian."
So, if you like O'Brian, and would enjoy spotting that stuff, I guess this might be fun for you.
I enjoyed being in this book, but never felt urgency to see what happened next. I enjoyed the domestic life scenes way more than the mystery. That's why it's three stars instead of four, but it was close. Excellent light reading though!