Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An annoying, frustrating, infuriating book!!!

I have read glowing reviews of Ms. McNaught's books, and this is the first one I have read. I found it delightful up until exactly page 425, when suddenly the man who was a "genius" couldn't put two and two together, (wife's brother is missing could appear at any time, wife runs off with mysterious stranger--get a clue!) and the woman who was so in love threw over every ounce of good sense, facts, and loyalty, to follow a worthless brother in a totally cruel and harebrained scheme. I lost all respect for either one of the characters, but especially her. I can forgive many things in a heroine, but disloyalty and stupidity aren't among them. And the ending is totally contrived--the simple characters and incredible plot are definitely more forgiving of our lovely and faithless heroine than I am. If this is what makes Ms. McNaught's works so glowingly wonderful, I will happily read not another one of them!