I actually liked this one far better than her prior Lord Peter books (which isn't saying much- I rather loathed Thrones, Dominations and A Presumption of Death).

One of my biggest complaints about JPW's earlier Lord Peter Wimsey books was the fact that it was excruciatingly obvious that they were being written by a modern author, who really didn't quite understand where Sayers and her characters were coming from. By setting the main action in 1951 (and thus, closer to modern times and modern sensibilities), JPW is able to much better avoid this previous weakness.

I also feel like JPW has never fully understood either Peter or Bunter, and this is still true, but I think she's gotten a better grasp on Harriet in this book, and in a certain way, Harriet is rather the center of this book, and thus, it succeeds better than its predecessors.