Instruct: Classify the given review as either positive or negative.
Query: Great Thriller

I suggest each of Richard Preston's books because they are so good. The Hot Zone is my favorite. Biologists and civilians alike will enjoy this edge-of-your- seat thriller. The scariest part is that the story is true. Thrillers are most terrifying when they are true. This book is well-written and is about the outbreak of the Ebola virus. Great for people who liked the movie Outbreak.