This book was about an 11-year-old boy named Gregor who lived in New York. Gregor's dad went missing about 2 years ago, and nobody could understand why. One afternoon, while Gregor was taking care of his baby sister Boots, Gregor was sucked into a mysterious hole in his laundry room along with his sister. They discover a land called the Underland. It is a world of bats, roaches, spiders, and rats. Gregor finds out that his father had also disappeared in this way. He must, along with various other friendly creatures, go on a quest to save his dad. This quest was written about by a "prophet" long ago. I chose to read this book because I enjoyed other books by the author. I liked it because of the suspense involved in it. It also had quite a few humorous moments. I would recommend this book to someone who is interested in adventure and humor if you don't have anything better to read.