Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A Factual Novel

Richard Preston here does an exemplary job of weaving historical and modern facts into a well written novel. He obviously knows his facts when writing about viruses and hot zones, etc.. Besides being an interesting novel in it's own right, Preston has a lot to say here about epidemiology, forensics, and how autopsies are done. There are descriptions of gruesome, drawn out deaths in this book, and some of this is just sick, sick, sick, but it will keep you turning the pages, fascinating nevertheless. Much of this novel concerns itself with the science of forensics, it is interesting how scientists can gleam information out of what at first glance may seem to be very little evidence, and alone this would make the book worth reading. I took one star off of my rating as the novel seemed to me to start very slowly and it was really only the last one third of it that it got intense, but overall a good solid read.