ciphers

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.

When twelve-year-old painter Esther gets stuck at math camp rather than art camp, she is determined to prove herself but someone leaves cryptic messages intended to drive her away.

"Cryptography is a powerful tool that's been used throughout history--for good and for bad. Learn to make and break the same ciphers used by monarchs, spies, and soldiers. Then put your knowledge to the test by creating your own secret messages for friends and family"--Back cover.

Kiki and her friends learn about coding as they compete to be the escort for young narwhal who will visit Trident Academy with her famous parents. Includes glossary, key to the codes used, and information about safeguarding narwhals' habitats.

Second-grader Sam Graham wants a cell phone to do research and share information but when his parents say no, he devises a new plan that starts a fad at school.

Ethan and Devin have finally gotten the puppy of their dreams! Even better, taking their new pup to the dog park near the lake means the chance to explore a new Pokemon GO habitat! But the energetic puppy chews on everything in sight, including a map.

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.