This is a very high-energy action/suspense novel. The main character and the major sidekicks are not beyond the bounds of believability (though there is a bit of strain). The plot tries a bit too hard to add twists, and some of those are unreasonable, but the relentless beat of the action carries the story past those problems fairly well.
This book is very much in the Die Hard vein, and fans of that movie will probably enjoy this book.