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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.
Bletchley Park, 1942: As World War II rages on, Honey Deschamps sits at her type-x machine, tediously transcribing decrypted signals from the German Army, doing her part to assist the British war effort. Halfway across t...
"Amy and Dan hit the high seas as they follow the trail of some infamous ancestors to track down a long lost treasure. However, the real prize isn't hidden in a chest. It's the discovery of the Madrigals' most dangerous ...
"A two-hundred-year-old code devised by Thomas Jefferson becomes the key to a present-day conspiracy at the highest levels of Washington and the power elite of Palm Beach"--Provided by the publisher.
"A debut, rip-roaring archeological thriller about the search for the lost tomb of Alexander the Great "--Provided by the publisher.
For twelve-year-old twins Andrew and Evie, moving is a way of life. Their dad is in the military, and they've never stayed in one place for long. But relocating has gotten harder since their mother disappeared on the twi...
Amy and Dan are in a race for their lives ... and the enemy may be closer than they think. When seven members of their family were kidnapped by a sinister organization known as the Vespers, thirteen-year-old Dan Cahill a...
During World War II, eleven-year-old Felicity is sent from London to Bottlebay, Maine, to live with her grandmother, aunt, uncle, and a reclusive boy who helps her decode mysterious letters that contain the truth about h...
Zoe's sixth-grade year at a Brooklyn school for gifted students is marked by changing relationships with her fellow students and teachers, recognition of her talent for cryptography, and a greater awareness of her passio...
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 b...
Philadelphia detectives Kevin Byrne and Jessica Balzano match wits with a deranged killer who is using the streets of the city as his own personal killing ground.
A mysterious benefactor hand-picks a group of teen geniuses to follow a set of clues leading to the secrets of everlasting life, secrets which they must steal and for which they risk being killed.
Young James Bond must take a series of dangerous gambles to decipher a code that will save a kidnapped professor.
A clue found in Book 3 sends Amy and Dan to find out 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 impo...
A respected and renowned shine of the Roman Empire vanished without a clue, and archaeologists have no idea where it is. Alexander the Great's tomb is also missing, but when word of its secret location comes out, along w...