With his new spy kit and his faithful sidekick Mudge, Henry is ready to look for clues, steal secrets, and flirt with danger. One of the first things Henry and Mudge find is a coded message..could there be another spy in the neighborhood?
Henry and his dog Mudge make the most of summer in this third Ready-to-Read book of their adventures.. Henry and his 180-pound dog Mudge are best friends forever. And they're ready to share summertime fun!