I really enjoyed reading this book. Janus is a strong female character who is very tech savvy, which is a great respite from the usual female characters in many stories that I've read. I love that she's very intelligent and not exactly all boy crazy, but that's not to say that she doesn't have a interest in anyone though. There's a bit of suspense, some drama, and a little dash of teenage romance in the mix of this story. 
 I loved getting to know Janus and the other characters in this book. Janus really had a lot of depth and I could believe that she was an actual human being rather than some stereotype of a person. I'm sure there will be more in store for the rest of the characters along with Janus as this is a series. 
 I would recommend this book to any fans of computers, spy stories, and anyone who enjoys reading a story about a strong female character. This book is basically for anyone who enjoys a good story.