Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Enjoyable, but the "mystery" is not much of a mystery.

Normally a big fan of Rendall/Vine, I was a bit disappointed in this book at the end, since I was able, midway through it, to fairly easily figure out Henry Nanther's "crime". I kept reading along, hoping for the plot twist that I expected to come finally. It never did and I believe the ending is rather obvious. On the plus side (and why I gave the book four stars), the book is, as usual, well-written and full of absorbing detail.