I absolutely loved this book! Sure I might have gotten confused several times reading and my head started to hurt with the different timelines and things that happened, were going to happen, or trying to figure out stuff that was too complex for me to go along with. 
 I like reading books about time traveling, seeing as how I'm obsessed with the British sci-fi show Doctor Who. While this book had nothing to do with a Tardis or aliens or time traveling to other planets, it still had the awesome time traveling and the confusing paradoxes. 
 Bree is from the 23rd century and she has to go to the 21st century to do a job/delivery and she ends up meeting Finn and his family and things happen, and bam she's getting into trouble and her mother is in a coma, and it seems like Future Bree is pulling the strings. The saying "everything happens for a reason" seemed to make sense as I read the book. Basically every action has a consequence/reaction associated with it. It was no mistake that she ended up meeting Finn in the beginning of the book, nor was it a mistake that she ended up meeting him 3 years later in his timeline to when he was 18 and ended up taking him with her to the 23rd century after a Force Fade, and etc. 
 I liked the suspense throughout the whole, it was barely obvious but you could tell that it was hidden to give Bree a sense of urgency to what she was doing. Apart from that, I really liked the romance that bloomed between Finn and Bree. Of course, Finn had already experienced having her as a girlfriend but only it was Future Bree, so it was double sweet and adorable to see their interactions towards each other because it showed that no matter what they knew of their "past" relationship, what was happening right now, in the future, they still managed to stay true to their feelings and not do anything too rash (view spoiler)[that bittersweet moment when they finally confessed their feelings for each other though! (hide spoiler)]. That love triangle was weak tho, no offense Wyck but you were never supposed to end up Bree anyhow. 
 Also, I like how everything connected in the end. there were some things that hadn't made sense as I read the book or those that I found to be frivolous turned out to be important after all. Because of this, the story was very interesting and confusing at times. I admit that the ending had me wishing it wouldn't end there because I was a little confused and needed more time to process what was going on but at least reading the epilogue had me happy that it wasn't a cliffhanger. Sure, there were a lot of unanswered questions, especially with the Shifter chips, the Buzz, and the future Shifters, but all it did was verify that this isn't the last of Finn and Bree's adventure and there's more to come (still no news on whether this will be a series or a trilogy or duology) and I can't wait to get my hands on the next book to see what happens next. Definitely a must read!