ciphers

When a mysterious figure presents William with a strange pyramid-shaped puzzle, it sets in motion a series of events that sends William on a wild ride from Norway to England to the Mariana Trench, the deepest part of the ocean. Along the way, he ll discover that some of the people he knew can no longer be trusted and that the Institute for Post-Human Research is hiding a dark secret. He ll also discover an ancient civilization hidden under the ocean and a giant, mechanical, teleportation octopus.

"It was only a few weeks ago that the Biedermann twins, Tess and Theo, along with their friend Jaime Cruz, followed the secrets of the Morningstarrs' cipher further than anyone had in its century-and-a-half history--and destroyed their beloved home in the process. But the Old York Cipher still isn't solved. The demolition of 354 W. 73rd Street only revealed the next clue in the greatest mystery of the modern world, and if Tess, Theo, and Jaime want to discover what lies at the end of the puzzle laid into the buildings of New York by its brilliant, enigmatic architects, they will need to press on. But doing so could prove even more dangerous than they know. It is clear that the Morningstarr twins marshaled all the strange technology they had spent their lives creating in the construction of the Cipher, and that technology has its own plans for those who pursue it. It's also clear that Tess, Theo, and Jaime are not the only ones on the trail of the treasure"--Provided by publisher.

"Robert 'Smiles' Smylie and his friend Ben become embroiled in a high-stakes negotiation with a pair of suspicious Feds when Ben cracks a code with the power to unlock all the Internet's secrets"--Provided by publisher.

Steve's lie about liking to break codes comes back to haunt him when Quinn gives him a message to decode, and he must either figure out the code or tell Quinn the truth.

Photographs, illustrations, and text describe how math was used to decipher coded messages throughout history.

Learn math tricks that can be done with times tables, zip codes, magic squares, as well as codes to secret messages.

Looks at the history of code making and breaking, from Champollion deciphering Egyptian heiroglyphs to the German Enigma machine.

Thirteen-year-old Ruby, a code-cracker and detective, gets an anonymous call that leads her to the headquarters of Spectrum, a highly secret anti-crime agency that needs her help to crack a code, but she uncovers an evil plan by the Fool's Gold Gang.

"When the Code Busters visit the Carmel Mission, a series of coded messages sets them on the hunt for long hidden pirate treasure"--Provided by publisher.

After William begins to suffer from mysterious fits that leave him unable to control his body let alone crack codes he begins to worry that the metal inside him is acting up. There s only one place he can go for answers: the Institute for Post-Human Research.