From the "A Word With the Author": The Kennedy assassination is a part of Dallas history that took place during Captain Will Fritz's tenure of duty. Thus, the author, powerless, is drawn into the enigma and the black hole of the Kennedy assassination.
While there is some good information in this book, it seems the author bought the lone gunman theory of the assassination of jfk, despite using Jim Garrisons "on the trail of the assassins" as a reference. He also presented Will Fritz as a man that avoided trouble and survived. Commendable, but he was a police captain and standing right there when Ruby killed Oswald. I suppose taking a closer look could have been a very dangerous occupation.