Zero Hour is a fantastic book about Otto and his friends who live in H.I.V.E. They embark on a mysterious journey to stop Overlord, an artificial intelligence before he takes over the world. This book written by Mark Walden has a great story and plot. I really liked this book because its action and adventure kept me on the edge of my seat, and it repeatedly surprised me with the events of the story while I was attempting to repeatedly predict what was going to occur next.
review by Koushhik, age 14