So, have I mentioned lately how much I heart Zellie and Avery? I really enjoyed the first book in this series, Glimpse, and was eager to revisit this world. I was not disappointed. All the elements I enjoyed in the first book were also in this book: great teenage dialogue, Zellie and Avery, an engaging story, twists and turns, Zellie and Avery, a smooth writing style, Zellie and Avery...ya get the picture ;) There are also a couple of other characters who have bigger roles in this book -- Ben and Christopher. We first met Ben at the end of Glimpse and his character continues in this book in a more significant role that also creates some romantic conflict. Christopher also adds some conflict to the story as the "bad guy" or at least one of them. He may seem like a new character at first, but he is actually one you have seen before in Glimpse.The story opens a short time after Glimpse ends. Ben comes back into the story and we learn more about his abilities and his past. Zellie and Avery's relationship is tested when the parental units band together to keep them apart to protect Avery from the death seen in Zellie's vision. They will have to stay apart unless they can find a way to prevent the vision from coming true. Christopher is plotting his revenge on The Society, and an attack by a greater evil must be thwarted or they are all doomed.Like Glimpse, the story had plenty of twists and turns that kept me guessing which way it would go. There were multiple POVs, but it seemed to be mostly Zellie and didn't switch as frequently, so it was a little easier to keep track of who was talking. It was a smooth read that I didn't want to put down. I was drawn through the story and eager to see what would happen next.The few nitpicks I had include one of the characters doing a complete flip-flop on his focus that did throw me off a little. He spends a good portion of the book focused on a goal that he had been working toward for a long time, and then he suddenly does a complete turnabout without seemingly much more than a shrug of the shoulders. (That’s a little cryptic but I don’t want to give away any spoilers!) The transition just seemed too easy.Just a heads up...this book has more sexual content than the first book. Some readers may feel it is inappropriate for a YA book and others will not see a problem with it. You will have to judge for yourself, but I would probably recommend it to the older end of the teen audience or adults.Stacey spins a great story that keeps me engaged and turning the page. I love the characters and Glimmer is a great addition to the series. Though the ending doesn't have a huge cliffhanger, it does leave some open story threads to be explored and also a few questions in this reader's head. I look forward to the next book, Glow, and another dose of Zellie, Avery, and the rest of the gang.