This book is very hard to categorize: set in the near future with gadgets = scifi? protagonist looking to solve a mystery = mystery? characters involved in chase across dessert including rattlesnakes, rampaging dogs and trustworthy horses = adventure? protagonist becomes romantically interested in one of the other characters = romance? Well, it was all of those and more.
So, while I have a hard time categorizing it, I have no trouble saying that if you like one or more of the above, you'll like this book. The characters are well-concieved and written, the plot is clever and intricate and you will probably have lots of difficulty guessing the culprit (I certainly did).
What you will NOT find in this book: boring infodumps, scifi gobbledegook and graphic sex.