code and cipher stories

Akiko, Mae, and Josie, also called the Infinity Trinity, spring into action after learning that a spy is betraying secrets to the Japanese military--and that Akiko's mother may be involved.

"Marly, Sai, and Isla are back on the hunt. After finding Mr. Summerling's hidden treehouse, they've discovered a new set of clues for them to follow, leading them straight to the heart of their mysterious neighbor's life: his house. The same house Marly has been living next to all of these years, which, they discover, is filled with hidden rooms and staircases. With just a few scraps of papers as clues, and Mr. Summerling's angry son on their tails, can the Treasure Troop find the answers they're looking for?"--OCLC.

"Chris and Carrie have been betrayed. Maddison has discovered the dark secret in her father's past. A cold case is suddenly hot and has changed from 'missing' to 'murder.' As a crime wave hists Archer's Grove and authorities struggle to catch the culprits, Chris, Carrie, and Maddison turn to the Kinsolvers' Aunt Elsie for answers. Can the notebooks she left behind illuminate this tangled web of lies, betrayals, and broken promises? Will the truth finally be uncovered?"--Proved by publisher.

Twelve-year-olds Ambrose, Tom, and Frankie are transported to the boys' hometown of Freedom Falls, Ohio, in 1852 when Frankie blows her Romani family's magical trombone, and to return home they will have to use both Morse code and the ancient form of divination known as the I-Ching.

Amy and Dan, members of the powerful Cahill family, try to uncover the thirty-nine clues which will reveal the secrets of their lineage and find out what really happened to their parents.

In 1666, after four months away, friends Christopher Rowe, Tom, and Sally return to London triumphantly but, guided by coded riddles, face a conspiracy that threatens Christopher, as well as the King himself.

Told in multiple voices, fifteen-year-old Jamaican Louisa Adair uncovers an Enigma machine in the small Scottish village where she cares for an elderly German woman, and helps solve a puzzle that could turn the tide of World War II.

"A historical novel about a young woman with a talent for forgery who helps hundreds of Jewish children flee the Nazis, inspired by a true story from World War II"--Provided by publisher.

Told in multiple voices, fifteen-year-old Jamaican Louisa Adair uncovers an Enigma machine in the small Scottish village where she cares for an elderly German woman, and helps solve a puzzle that could turn the tide of World War II.

"Mr. Summerling, Marly's neighbor, talked about being a treasure hunter, and news of his death has brought Marly into a treasure hunt of her own. In his will, Mr. Summerling left a treasure for Marly and two classmates, Isla and Sai. They barely know each other, but they have to work together with a series of riddles, puzzles, and clues to find the treasure"--OCLC.