This series had me from this book, book 1. I’ve listened to it a few times through. It also has a series about the girls before the ‘event’. I read this series before I knew that one even existed. It’s called the let go series. The girl in the box is the first one I believe. Definitely all of them are worth reading. If you’re looking for a great series that covers all your favorite post apocalyptic things, this is it. Look no further.