Not impressed so far. The main problem is that none of the characters in the story seem to care much about either the dead person or the murder mystery, beyond a "Oh dear, it will be embarrassing if someone who's connected to the family is convicted of the murder". That makes it hard for me as a reader to care much. 
 There's not much to enjoy as an Austen fan, either -- at least for me, the main characters seem unrecognizable, and not very likable. 
 I'll probably finish it, because I'm vaguely curious about what happens, so I'll give it two stars instead of one. 
 --- 
 I've finished it, and am reducing my rating to one star. The mystery was solved by deux ex machina. The story might have been interesting if it had been told from the point of view of some of the persons who were actually involved, instead of bystanders. And for some reason, the author chose to end the book with a clumsy re-enactment of the conversation between Elizabeth and Darcy at the end of Pride and Predudice.