This is an exciting adventure in time, racing to save the life of Cole's little sister but maybe also the world as we know it. I am an adult reading a book that is targeted to a much younger audience. For teens or young adults, this is an edge-of-your seat adventure that opens up the world beyond the vastness of the stars. For someone much older, it is still an edge-of-your-seat adventure while exploring the possibility of other dimensions and the soundness of space-time theories. Reilly does a great job of basing the story on theoretical ideas and stirring in enough fantasy to show that anything is possible. It has a great message about overcoming your fears and becoming a better person such as how you are seen by others close to you. I loved the very creative construct of the portal and that is was not open to just anyone walking through the opening. Considering the background of the kids, I did not understand why Cole would be teaching Nell how to steal without getting caught - I don't think this is a common thing among kids and felt that it struck an off-chord for me. I understand the basis for this later in the story, but didn't like the indication that this was an acceptable activity like earning a Boy Scout badge. Although the action mostly involves Nell and Cole, I really like Stevie B as the anchor of the group and the beacon of change for the town. I very much enjoyed this tale even though I have differing ideas about parallel universes.

When a new girl arrives claiming to be from the future, Nell and her friends face a choice that could change everything: stick with the life they know or embrace the unknown possibilities of time travel.

This was a really fast paced time travel YA novel. I have to admit - a lot of time travel and time loop stuff goes way over my head but I am a sucker for these stories every single time. I love imagining different universes and time loops and time travel and apparently, theoretically, it is possible. The author gives a whole list of books to read in the author’s note!

I liked how brave Cole, Nell and Stevie B were. I also liked how they acknowledged the multiverse. Charlotte was a mystery for sure and I really enjoyed how she and Levi fit into the story. This one went by so quick! I’d definitely recommend it for a perfect weekend read. The stakes are just high enough and it’s just tense enough to keep you finding the pages.

I was provided a digital copy for review by NetGalley and the publisher. All thoughts are my own.

This book is about time travel and parallel universes (multiversity ideas). There was a lot going on and I'm not sure why the main character Nell had a love triangle going on with her boyfriend Cole and friend Stevie B. That storyline was just strange. Most of the story centers around the idea if traveling through time to bring back life saving medicine for Cole's little sister. There really isn't anything else here.

The book was underwhelming and didn't really meet my expectations. However, the relationships in the book are wholesome and cute and can be enjoyable at some points. The ending did feel a bit rushed for me.

A YA novel revolving around three close friends on a quest to save loved ones and the future through time travel. I found this a bit hard to get into until the characters started asking the right questions. From there it was all suspense and some twists. A lot of questions go unanswered, but not all. Overall a beautiful story of self-discovery and friendship.

I loved the story, the world building and meeting the different characters. I felt completely immersed in the story and couldn't stop reading it.