This book is part of a book series called Tenkai Knights .

. This book is part of a reading scheme, meaning that it is a book aimed at children who are learning to read.

There are 80 pages in this book. This is a chapter book. Publishers market early chapter books at readers aged 6-10 years. This book was published by Grosset & Dunlap .

The Unknown Adventurer is still believed to be at large in the wild. Ray Santos is the author of numerous licensed children books including Power Rangers, Wow! Wow! Wubbzy!, Super Hero Squad and Transformers. He lives in Brooklyn, NY.