2 1/2 rounded up. A quick read; however the story felt a little flat to me. I liked the characters well enough. I just felt the story lacked depth and would have been better with more fleshing out of the darknet. The darknet is a fascinating subject, so there was great potential for a really good thriller. Instead the darknet was portrayed in very generic terms and the story ending wrapped up a bit too quickly and too neatly to generate much of a reaction out of me.