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The murder notebooks
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Anne Cassidy |
Five years after seventeen-year-old Rose's mother and Joshua's father disappeared, when the step-siblings reconnect in London, Rose witnesses two murders which she fears are linked to coded notebooks… |
OL16126147W |
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Depth charge
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M. Zachary Sherman |
Lieutenant Aaron Donovan of the Office of Strategic Services embarks on a dangerous mission to get aboard a damaged German submarine and obtain the newest codebooks for the German Enigma cipher machi… |
OL16152458W |
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A King's Ransom (The 39 Clues
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Jude Watson |
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 … |
OL16699545W |
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Feel the fear
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Lauren Child |
When a ghostly foe begins stealing from the highest buildings in Twinford, Ruby Redfort is ready to defy death one more time to capture the bandit. |
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The hunt for the missing spy
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Penny Warner |
During a class trip to Washington, D.C., the Code Busters have many opportunities to hone their sleuthing skills as they explore the International Spy Museum, the White House, and more, but when a cl… |
OL20046839W |
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Gecko Gladiator
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Ali Sparkes |
Josh and Danny are stuck in Princess Land--a store full of pink toys and worse: actual girls! To avoid security guards and screeching girls, the twins try a quick spritz of the infamous S.W.I.T.C.H. … |
OL21035720W |
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Killing Rachel
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Anne Cassidy |
As her stepbrother, Joshua, continues to decipher the meaning of the cryptic murder notebooks, Rose wonders if the recent death of her former best friend may hold a clue to the disappearance of Rose'… |
OL22638275W |
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Manual del espía
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María Mañeru |
"Este manual te presenta distintas maneras de ocultar secretos y camuflar mensajes, como hacen los espías de verdad. Conocerás métodos para comunicarte que pasarán inadvertidos a los que te rodean. ¡… |
OL24284535W |
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The shadow protocol
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Andy McDermott |
Adam Gray is a cipher, a disciplined loner conditioned not to betray a single emotion. Part of an elite team spearheaded by a brilliant neuroscientist, Gray is a covert agent armed with PERSONA, a de… |
OL24297890W |
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Ciphers, Codes, Algorithms, and Keys
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Laura La Bella |
64 pages : 24 cm |
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I spy
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Diana Noonan |
The first story tells how spies hide secret messages. The second story tells how secret messages could be sent to a friend. |
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The case of the mysterious codes
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J. F. Warner |
Jason and the new friends he and his sister have made during their summer in Newport, Rhode Island, try to figure out the coded messages he has been getting from a mysterious stranger. |
OL3466003W |
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The kids' book of secret codes, signals, and ciphers
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E. A. (Eleanor A.) Grant |
Discusses the history and different varieties of codes and ciphers, describing code machines, signals, sign language, picture languages, and hidden messages. |
OL4802862W |
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The kids' code and cipher book
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Nancy Garden |
Presents a variety of codes and ciphers and includes messages to encode and decode, as part of a story. |
OL505002W |
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Hieroglyphs for fun
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Henry Joseph Scott |
Presents the basic "alphabet" of twenty-four hieroglyphic letters with the approximate English sound they represent and briefly discusses various other aspects of Egyptian culture. |
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Secret writing
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Peter Sears |
Discusses secret writing, ciphers, and the processes of creating and deciphering secret or difficult languages. Includes thinking and writing exercises. |
OL79617W |