This book is part of a book series called Georges Secret Key .

This book has been graded for interest at 9-11 years.

There are 416 pages in this book. This book was published 2019 by Simon & Schuster Books for Young Readers .

Lucy Hawking, Stephen Hawking's daughter, is a journalist and novelist. She is the coauthor of the George's Secret Key series for kids, as well as the author of the adult novels Jaded and Run for Your Life. She lives in Cambridge with her son. Garry Parsons studied Fine Art at Brighton College and after that he went on to study Illustration. He is a talented new illustrator, whose work has captured the imaginations of children all over the UK. Billy's Bucket won the 2004 Children's Book Award. Krong! is his first book as an author/illustrator.