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Author
Series
The 39 clues. Main series volume 9
Language
English
Description
The shadow of the man in black has followed fourteen-year-old Amy Cahill and her younger brother Dan on their worldwide search for 39 Clues that lead to a great power. The man has tried to kill them and he is a Madrigal, as were their parents. And now the man is ready to step out of the darkness for their final confrontation.
Author
Series
The 39 clues. Main series volume 8
Language
English
Description
As they continue their search for the 39 Clues in China, fourteen-year-old Amy is faced with a terrible dilemma when her eleven-year-old brother Dan suddenly disappears--keep on searching for the next Clue or try to find her brother.
Author
Series
The 39 clues. Main series volume 1
Language
English
Appears on these lists
Description
The first book in the #1 bestselling phenomenon sends readers around the world on the hunt for the 39 Clues!Minutes before she died Grace Cahill changed her will, leaving her decendants an impossible decision: "You have a choice - one million dollars or a clue."Grace is the last matriarch of the Cahills, the world's most powerful family. Everyone from Napoleon to Houdini is related to the Cahills, yet the source of the family power is lost....
Author
Series
The 39 clues. Main series volume 4
Language
English
Description
A Clue found in Book 3 sends Amy and Dan jetting off to find out just what's behind the fierce rivalry between the Tomas and Ekaterina branches of the Cahill family. Was a Clue stolen from the Tomas branch? Where is it now? And most important, can Amy and Dan get their hands on it before their rivals do?
Author
Series
The 39 clues. Main series volume 10
Language
English
Description
Throughout the hunt for the 39 Clues, Amy and Dan Cahill have uncovered history's greatest mysteries and their family's deadliest secrets. But are they ready to face the truth about the Cahills and the key to their unmatched power? After a whirlwind race that's taken them across five continents, Amy and Dan face the most the difficult challenge yet -- a task no Cahill dared to imagine. When faced with a choice that could change the future of the world,...
Author
Series
Code Busters Club volume 1
Language
English
Formats
Description
Using their code-breaking skills, four middle-schoolers solve the mystery of the eccentric man who draws stick figures on his second-floor bedroom window.
Author
Language
English
Description
"Codes can carry big secrets! Throughout history, lots of good guys and lots of bad guys have used codes to keep their messages under wraps. This fun and flippable nonfiction features stories of hidden treasures, war-time maneuverings, and contemporary hacking as well as explaining the mechanics behind the codes in accessible and kid friendly forms. Sidebars call out activities that invite the reader to try their own hand at cracking and crafting...
11) Flashpoint
Author
Series
Language
English
Description
Amy and Dan Cahill have their final confrontation with twisted billionaire J. Rutherford Pierce, a man whose power has no limits and is one step away from being elected president.
Author
Series
Ruby Redfort volume 1
Language
English
Appears on these lists
Formats
Description
Ruby Redfort is a genius code-cracker, a daring detective, and a gadget-laden special agent who just happens to be a 13-year-old girl. She and her slick side-kick butler, Hitch, foil crimes and get into loads of scrapes with evil villains, but they're always ice-cool in a crisis.
13) Day of doom
Author
Language
English
Description
It started with a kidnapping. A shadowy organization known only as the Vespers snatched seven members of the Cahill family and demanded a series of bizarre ransoms from around the world. Thirteen-year-old Dan Cahill and his older sister Amy began a global treasure hunt, determined to bring back whatever Vesper One needed, so long as it kept the hostages safe. But when they deliver the last ransom, Amy and Dan discover Vesper One's terrifying endgame....
15) The medusa plot
Author
Series
The 39 clues. Cahills vs. Vespers volume 1
Language
English
Description
Cahills are being kidnapped by a shadowy group known only as the Vespers. Now Amy and Dan have only days to fulfill a bizarre ransom request or their captured friends will start dying. Amy and Dan don't know what the Vespers want or how to stop them. Only one thing is clear. The Vespers are playing to win, and if they get their hands on the Clues ... the world will be their next hostage.
Author
Language
English
Formats
Description
An exploration of how codes-both cipher and aesthetic-have come to exist in history from Pythagoras through the Knights Templar to Turing and more.
Did the Masons encode messages in walls-and even in the street plan of Washington, D.C.? Does the Hebrew Bible conceal hidden mysteries? Ingenious methods for encoding secrets have taken many amazing turns through the ages, from the military signals the Romans flashed from hilltop to hilltop, to the computer...
Author
Language
English
Description
"Teaches how to break encrypted texts, whether by hand or using free computer tools. Covers specific cryptographic techniques and includes real-life examples of encrypted text, from modern postcards to nineteenth-century newspaper ads, telegrams, notes smuggled into prisons, and entire encrypted books"--
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