Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Thoroughly Disappointing!

I so wanted to enjoy this book but found it lacking in the plotting, mystery and verve that the other books in this series had. The mystery is contrived and most importantly, transparent. Gordianus has become a moralizing, old stick-in-the mud. It just wasn't any fun to read! Had this been the first book of this series I read, it would not inspire me to read the others.