Cragbridge Hall is the premier education facility in the world. There is technology that most people can only dream of and it is open to only the most exceptional students. When the grandchildren of Oscar Cragbridge, the man who is behind most of the technology at school, are accepted life starts to get crazy. Derek is truly an exceptional young man who has been leaps and bounds ahead of his peers for pretty much his whole life, while Abby seems to be a pretty normal teen. She doesn't understand why she has been accepted and life gets a little tough for her when her classmates find out that her grandfather may have gotten her in.
The time travel comes from the object that makes Cragbridge Hall so far ahead of everywhere else, The Bridge. The Bridge allows the class to watch as history actually happens, to be an observer without having any affect on what is happening. When Oscar goes missing his grandchildren are pulled into a situation that they never expected to face.
Derek, Abby, Carol, and Rafa are all great characters. As you read the book you are drawn into to a place where you don't know who you can trust. Abby and Derek were told by their grandfather to not trust anyone, but they can't do it all by themselves so they have to go on a limb and trust some of their fellow students and teachers.
I knocked this book out in two days not wanting to stop reading until I was finished. The plot has an excellent pace with enough twists to keep you off balance until the end. The only issue that I had with the book was a time travel paradox kind of thing. I can't give any details without exposing major spoilers so I won't say more than that. I will say that even with that little time travel hiccup this is one of the best YA books I have read in a while. I will be reading this one to my daughter as soon as she is old enough to appreciate it and I can't wait to see what happens with the rest of the characters.