Like most of the books in this series, it was a pretty quick read. The books where the group goes together on adventures are not really my favorite. I tend to prefer the origin stories. This seemed like a good continuation of Antsy's origin book, which I had previously enjoyed. It definitely delved deeper into the nuances of the doors, how they work and more importantly, the cost of using them. The book did feel a bit meandering at some points, it wasn't always clear exactly what the plot of this was but it was still an interesting read. Very interested to see who's story we pick up on next, though.

I love the books were the kids travel together through several worlds on one of those forbidden quests!! We get to see several worlds in this one, including one with dinosaurs as the cover implies, as well as some we already know. I enjoy reading the new book in this series every year to revisit some of my favorite characters and learn more about all the worlds behind the doors! I would love to visit Christopher's world soon!! These series will be fantastic for your reluctant HS readers - they are short and packed with world building and action.