Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: This book is a challenge

As other reviewers have pointed out, the cover blurb to this book suggested an engrossing story. With eagerness I bought it! The author's narrative method, however, is unusual. It changes from third person to third person, plays around with chronology and, occasionally, speaks directly to the reader to form a view about a scene or a character. Frankly, I did not like this approach - I wanted to read a story and instead my mind was being challenged from all directions. This is not a criticism - as you can see from the customer reviews, many people love this book and Holman is a clever writer. But I did not enjoy the style of writing and could not finish the book.