Description: "A Riddle In Ruby has everything you could possibly want from a story: clever heroes, fiendish villains, startling plot twists, pirates, thieves, swashbuckling, adventure, action, mayhem - and plenty of humor. This is an exceptionally enjoyable, incredibly original series." -- Stuart Gibbs, author of the New York Times-bestselling Spy School saga "In this latest installment, Ruby and her crew must save the city of 'Philadelphi' from a mad scientist. The books are action-packed and filled with great friendships, terrible villains, plot twists, and plenty of humor." -- San Antonio Express-News "[The] highly anticipated trilogy capper...Ruby has been a fun protagonist through the Riddle in Ruby trilogy, with the kind of wherewithal that would cause fans to welcome her appearance in any future tales. This one is a delightfully dangerous romp, and a good end to our heroine's wild story." -- Booklist

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