Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mystery writers need to deliver mystery!

I thought this story was not up to the standard of the Owen Archer series. The historical detail is TOO painstakingly laid before us and the mystery disappears under the explanations of the intricate politics involved. This would still be forgivable if the novel delivered a good climax and denouement, but both were lacking. At the end of 250 pages, the writer abruptly leaves off and the heroine suddenly trusts a suspicious character for no well developed reason. However, all of the characters are shallowly developed and subject to capricious changes in behavior. After enjoying all of her previous series, I felt that MY trust had been betrayed.