Geronimo Stilton runs a newspaper and writes adventure stories. The first book, Lost treasure of the emerald eye starts with Geronimo's sister finding a mysterious map that shows secret treasure on a faraway island leading to a fast-paced adventure.
The Stephens Library has a large number of Zac Power books that are all faced paced spy books and come highly recommended. Zac Power books are also available from the Hutchins Wheelers eBook platform. Logon with a Hutchins username and password.