Thirteen-year-old Dan Cahill and his sister, Amy, figure out Vesper One's endgame and realize they must stop the organization from using their ransoms to harm millions of people.

This activity book is filled to the brim with exciting activities for Nate fans of all ages. There is plenty of space for kids to get creative, and all the favorite characters from Nate's world are included--the know-it-all Gina, Nate's best buddies, Francis and Teddy, his rival, Artur, and his least favorite teacher, Mrs. Godfrey, aka Godzilla. With personality pop quizzes (which Big Nate character are you most like?), the fabulous fun 'o' meter,...

"Communicate in a language only you and your friends can understand! Protect your diary from snooping siblings. Share your secrets with a BFF. Guard your texts from unwanted eyes. Create the lingua franca for your own fantastical secret world! Expert language creator David J. Peterson (inventor of languages for Game of Thrones, the Marvel Universe, and more) guides you as you create your own secret languages, codes, ciphers, and hidden messages. From...

After seven members of their family are kidnapped by an organization called the Vespers, Dan and Amy Cahill must race against time to track down an ancient map to pay as ransom to bring the hostages home.

"Teaches readers how to make secret codes and messages through clear steps, simple supplies, and helpful tips."--Provided by publisher.

Scholar Jules Addison and scavenger Amelia Radcliffe join forces to unravel secrets of a long-extinct civilization, only to discover something that could spell the end of the human race.

The intriguing tale of cryptography stretches all the way back into ancient times and has been evolving ever since. From Julius Caesar to the modern cryptography of computers, readers will be enraptured by the stories and examples of how some of the greatest minds of history have figured out how to make and break codes. Engaging text includes samples of codes throughout the lively story of cryptography. Readers will quickly become absorbed by this...

"Practically since humans began writing, they have been writing in code, and ciphers have decided the fates of empires throughout recorded history. In The Code Book, Simon SIngh offers a sweeping history of the subject of encryption. Combining a storyteller's sense of drama with a scientist's appreciation for technical perfection, he traces the evolution of its methods and reveals its dramatic effects on wars, nations, and individual lives. From Mary,...

When Bertie the badger visits his grandfather at a retirement home for magicians, he learns that his grandfather's rabbit, Enigma, has disappeared along with everyone's magical things, and the reader is invited to help break a code to find the items hidden throughout the book. Includes a built-in decoder.