A brilliant female codebreaker. An “unbreakable” Japanese naval code. A pilot on a top-secret mission that could change the course of WWII. The Codebreaker's Secret is a dazzling story of love and intrigue set during America’s darkest hour. 1943. As war in the Pacific rages on, Isabel Cooper and her codebreaker colleagues huddle in “the dungeon” at Station HYPO in Pearl Harbor, deciphering secrets plucked from the airwaves in a race to bring down the enemy. Isabel has only one wish: to avenge her brother’s death. But she soon finds life has other plans when she meets his best friend, a hotshot pilot with secrets of his own. 1965. Fledgling journalist Lu Freitas comes home to Hawai'i to cover the grand opening of the glamorous Mauna Kea Beach Hotel, Rockefeller's newest and grandest project. When a high-profile guest goes missing, Lu forms an unlikely alliance with an intimidating veteran photographer to unravel the mystery. The two make a shocking discovery that stirs up memories and uncovers an explosive secret from the war days. A secret that only a codebreaker can crack. "Sara Ackerman never disappoints!" ­—Kate Quinn, New York Times bestselling author of The Rose Code "Brilliantly written with a mystery that will keep you reading late into the night. . . . A fabulous read that makes me want to drop everything and travel to Hawaii!" —Madeline Martin, New York Times bestselling author of The Last Bookshop in London "Beautifully structured and well-told with authentic historical detail . . . another top historical novel by Ackerman." —Booklist (starred) "Thoughtful, romantic and ultimately hopeful, The Codebreaker's Secret is a riveting story of intrigue and love in wartime"—Shelf Awareness

Uncover the secret agents of World War 2—an exciting history book for kids 8 to 12 Discover World War 2’s hidden heroes and villains. Spies, Code Breakers, and Secret Agents explores the intriguing world of spycraft and shows you what goes on behind the scenes in war. From spy schools and ciphers to sneaky tools and secret armies, this guide takes you on a declassified tour of the undercover operations that helped decide the outcome of World War 2. There’s also more than a dozen short spy-ographies that cover some of the most famous (and infamous!) agents that were active during the war. This World War 2 book for kids includes: Fun for aspiring historians―Dig into the causes of and what led up to World War 2 so you can better understand the important part spies played in it. A family-friendly exploration―Learn about history in a fun and accessible way that anyone can enjoy. Covert illustrations―Get an up-close look at actual spies, as well as some seriously amazing spy gear. Amaze your friends and family with all kinds of awesome facts about spies and secret agents from World War 2.

Enter the emotional, suspenseful Regency world of USA Today bestselling author Jacki Delecki’s Code Breakers spy series. Undaunted by danger or scandal, these intrepid lords and ladies discover true love as they risk it all to save England from Napoleon’s treacherous designs. Two Unattainable Missions Joie and Reggie are back. And while it’s no secret they are in love, convincing her father that the titleless Reggie will be a good husband is a failed mission–at least so far. However, they won’t give up. Joie must return to London for her first season, pretending to accept her fate, that her father has picked an eligible man for Joie to wed. Help will come in the form of Lady Henrietta, who has personally assumed the task of sponsoring Joie to stifle any scandal and to help make the match with Reggie work. And only one is on assignment from the Crown. Reggie is in London, tasked with finding the mole inside the head code breaker’s household. Joie immediately tries to help Reggie with his assignment by befriending Lady Henrietta’s uncle who is a codebreaker–and fraternizing with the servants in effort to find the spy, despite Reggie telling her not to interfere this time. But when Joie discovers how the mole is sending the messages to France, the enemy must retaliate. But this time, she’s not the target. She’s jeopardized someone else. Who will live and who will die? And will Reggie and Joie ever be able to wed? THE CODE BREAKERS SERIES Men and women from the class of privilege and rank risk their lives to defend England against the treacherous designs of Napoleon. They confront disaster, scandal, and passion as they pursue their code of honor and love. Read the entire series or enjoy as standalone reads in this best-selling Regency romantic fiction series from USA Today bestselling author Jacki Delecki. A Code of Love A Christmas Code A Code of the Heart A Cantata of Love A Wedding Code A Code of Honor A Holiday Code for Love A Code of Wonder A May Day Code for Love A Code of Joy A Secret Code

"Discusses different methods for breaking secret codes"--Provided by publisher.

A four-thousand-year history of cryptography ranges from the time of the ancient Egyptian pharaohs to the present, explaining encryption's development and evolution, looking at famous codes, and offering clues for code-breaking.