This is an exceptionally well written, well-researched book about two events that were intertwined, the Chicago World's Fair and the crimes of a serial killer in late nineteenth century Chicago. The book is rife with period detail and highly descriptive passages that give the reader a taste of what living in Chicago was like at that time.The book provides a fascinating look at the enormous work and planning that went into creating the Chicago World's Fair, making it into one that was truly remarkable for its time, given some of the problems that the architects had to overcome. It also provides a fascinating look into the lives of some of the key players involved in its creation.Meanwhile, an enterprising and charismatic killer was also at work, his story being tied into that of the creation of the Chicago World's Fair itself. His story, however, is the weaker part of the book, as it lacks the detail that is evident in the other segment of the book. Still, it provides an interesting look into the life of a serial killer who seemed to go about his grisly business with impunity, as well as a look at crime, law enforcement, and the state of criminal justice in late nineteenth century Chicago.The photographs that were included in the book are excellent and illustrative. The only problem is that there are not enough of them, as the few that are included simply make the reader desire more of them. Still, those with an appreciation of history will enjoy this work of non-fiction and look forward to reading more by this author. 

Question: How author passion is reflected in the book?
Answer: This is an exceptionally well written