This is the way a procedural detective story should be written. Mr. Finder has written a tightly woven thriller that moves like it's jet propelled. There is an even mix of action and description of methods and materials. It's obvious that Mr Finder has a good knowledge of the spy equipment and methods used by investigators. This adds to the believability of the story, but he doesn't slow things down by being too descriptive. Mr Finder's characters were believable and well filled out. All together he has put out a terrific book. I enjoyed every word of it.