Books with adjectives like "fast-paced adventure-filled thrill-ride" are usually overhyped. Usually. In this case, The Walls of the Universe deserves such tags. It is fast-paced, adventure-filled, and thrilling. I finished it in a day--and it's a fair sized book--because I had trouble putting it down.
All of the main characters, with the possible exception of the villains, are complex. Melko sets up the story so we at first believe it will be John Rayburn versus…