Passenger is a tale of adventure through time. I really enjoyed the concept of the book, but I just couldn't get myself really excited about it. I really wanted to love it because I loved Bracken's first trilogy, The Darkest Minds. I don't know if it was just me, but I couldn't seem to focus on what was going on for most of the middle. But by the end, with the cliffhanger that leaves you wanting more, I know I will be also be reading Wayfarer. I'm hoping it was one of those books that sets up for a very exciting sequel!