Please provide more context or details about the book you are referring to. For example:
* The full title of the book: "Extreme Challenger You Spy" is not a recognized book title.
* The author's name: Knowing the author can help narrow down the search.
* Any additional information about the book: Is it a children's book, a spy thriller, or something else?
With more details, I might be able to help you find the information you are looking for.