The amber shadows —Ribchester, Lucy, author.

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...

The code —Lerangis, Peter.

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...

The Romeo and Juliet code —Stone, Phoebe, 1947-

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...

Double or die —Higson, Charlie, 1958-

Young James Bond must take a series of dangerous gambles to decipher a code that will save a kidnapped professor.

Storm warning —Park, Linda Sue.

"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 ...

Enigma : a magical mystery —Base, Graeme.

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...

The secret cipher —Ringwald, Whitaker.

Jax and Ethan must decode an ancient Greek cipher to uncover the location of two magical urns before the urns are used to remove all faith and love from the world.

The black circle —Carman, Patrick.

The dead of night —Lerangis, Peter.

Salem's cipher —Lourey, Jess, 1970- author.

The book of fate —Meltzer, Brad.

"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.

Solving Zoe —Dee, Barbara.

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...

The chaos code —Richards, Justin.

Fifteen-year-old Matt and his new friend Robin search the globe to retrieve an ancient code--rumored to have brought down the ancient civilization of Atlantis--from the hands of a madman who is bent on destroying the mod...

The Jefferson key : a novel —Berry, Steve, 1955-

Beyond the grave —Watson, Jude.

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...

Codex 632 : the secret identity of Christopher Columbus : a novel —Santos, José Rodrigues dos, 1964-

World at war, 1944 —Osborne, Mary Pope, author.

The magic tree house has taken Jack and Annie back in time to England in 1944. England is fighting for its life in World War II. Before long, Jack and Annie find themselves parachuting into Normandy, France, behind enemy...

The maze of bones —Riordan, Rick, author.

Into the gauntlet —Haddix, Margaret Peterson.

The last Templar —Khoury, Raymond.