This is very much the middle book in a trilogy. Gwen is bewildered both by her new role as the Ruby - one in a group of time travelers spread out through time - and by the boy who is the diamond in that same group. In this episode she has only known she was part of this group for about a week. She is struggling to learn what the adults in the society are so reluctant to tell her.She is also struggling to understand her relationship with the beautiful and mysterious Gideon. It seems that every time she sees Gideon he is reacting differently to her. One time he is friendly and seems to really like her. The next time she seems him he is suspicious and hostile. She is kept totally off balance by him. But her fascination with him seems undeterred by his volatile behavior. The major problem I am having with this story is the whole concept of time travel. Gwen goes back into the past and secretly meets with her grandfather as a young man. Yet her grandfather gave no indication in Gwen's regular life timeline that that ever happened. I found the whole time travel bits confusing if I thought about them at all though they were interesting if I just accepted them. I do like Gwen and her friend Leslie. I also like that Gwen can see and communicate with ghosts. This books ghost is the ghost of a gargoyle named Xemerius who adds a bit of comic relief to the story and who is a very helpful characters who spies for Gwen.The major plot points that are developed in this one concern Gwen trying to find out what Count Saint-Germain - the head of the secret society - is hiding about the prophecy and learning why Lucy and Paul stole the other chronograph and disappeared into the past. I enjoyed the story but think I would be enjoying it more if I could read all three volumes together. Having a year between episodes is making it harder to keep track of the various plots. Readers who enjoyed Ruby Red will also enjoy this book and will be eagerly waiting for the concluding volume.
