Instruct: Classify a given review as either positive or negative.
Query: I wish I had not read it

I was truly disappointed by this book. I love Agatha Christie, and have always considered her not only a great mystery writer, but also a marvelous novelist as well. Yet this book probably is the worst of all her writings. (I've read close to 30 of her full-length novel and some short stories so far). So don't ever read this book if you don't want to feel sorry for Agatha or yourself.