I am an audio book "reader". I have a 35-minute ride to work each day and love using my time productively by listening to books on CD. Since most reviewers read books the traditional way -- which supposedly explains why I have to pay extra for audio books :) -- reviews are almost always for the printed version. Thus, I'm left to cross my fingers and hope for a good reader. I always find myself wishing for information on the quality of the reader's presentation. So, for this review, I'm focusing on the audio presentation, since the various other reviewers have covered the content of the book in great depth. My dream scenario is when the author reads the book. Somehow I equate this with being as close as possible to being inside their head. Alas, not all writers are good readers, so thank God there are excellent readers like Leonard Robert Sean. I really enjoyed his presentation. His vocal inflection was great, and his voice is very pleasant. He did a great job with the various characters in the story. So, fear not, my fellow audio format enthusiast, the presentation is extremely well done for Prey. As for the story, I liked it a lot. I couldn't wait to go to (and leave) work each day so I could hear what would happen next in the story. The whole premise is especially worrisome since nanotechnology is real and nanoparticles already exist in our world today. Hopefully our government has responsible people involved. Or maybe we are all already infected :) Bottom line: The audio presentation rates "5" stars and the story rates "4" stars. Average them up, and you get 4.5 stars. Since Amazon doesn't offer me that choice, it seems fairest to let my ranking reflect the "4" stars for the story itself. Enjoy!!!