The mystery chapter book named Book Scavenger by Jennifer Chambliss Bertman is an extraordinary book. This book is about a 12-year-old girl, named Emily who is moving to San Francisco with her family. Her idol, Garrison Griswold, have been recently mugged and injured. In San Francisco Emily meets a new friend named James, and together they find an odd edition of The Gold Bug, by Edgar Allen Poe at a subway station. Emily plays a game which in the game you give ciphers to people online on the Book Scavenger website and the cipher will lead to a hidden book. Emily and James both know that the creator of the Book Scavenger website, Garrison Griswold, has been injured. They both believe that The Gold Bug has something to do with Garrison Griswold, because it has a hidden cipher which leads to other ciphers. Emily and James think that this is a new game Griswold is planning to launch, and that it might even lead to a valuable prize. Emily and James go on a long adventure to find out what the game is. Two men, named Barry and Clyde are also trying to find this book. They too, think it leads to something extremely valuable.