Our 11-year-old son read The Monster Who Wasn’t first. I started to read it, found it too confusing, and put it by our bed when he walked in the room. “So, you’re reading that?” he asked. I told him that I started to read it, but got lost a chapter or two into the book. He stated that it was a great book, full of monsters and action and that I’d really enjoy it. Our oldest son reads books like I’d eat bacon if there were an endless supply of it in the kitchen. When I finished The Monster Who Wasn’t I agreed with him for the part.
It’s a great book, just follow along closely or you’ll get lost