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.

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“Beautifully structured and well-told with authentic historical detail, interesting relationships, and the mystery of two young women who go missing from the same spot 22 years apart, this is another top historical novel by Ackerman.” Booklist (starred)

“Intense, suspenseful, and filled with mystery, flora, and fauna of Hawaii, the climate, the vernacular, and the total beauty of the location adds great setting. The in-depth knowledge of a codebreaker’s duties adds to the intrigue. What is most surprising is the unexpected and consoling ending that brings peace and understanding to 20 years of heartbreak and pain.” New York Journal of Books

“Brilliantly written . . . Ackerman’s settings blossom with stunning imagery as she brings to life characters that will stay with you long after you’ve finished the book. 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

“In this clever dual-timeline novel, Ackerman writes about two smart, adventurous women solving a captivating historical mystery, all set against the tropical beauty of Hawai’i during World War II and the 1960s. When I finished this book, I was more than ready to book a one-way ticket to the Big Island.” —Elise Hooper, author of Angels of the Pacific

“Once again Sara Ackerman delivers with a riveting novel of WWII-era Hawai’i. Her vivid storytelling makes the island come alive around you. A plucky heroine, a decades-old mystery, and a stirring romance make this book positively unputdownable!” ––Amanda Skenadore, author of The Second Life of Mirielle West

“Meticulously researched, rich and immersive, The Codebreaker’s Secret will have you enthralled. A must-read for all fans of the genre. I absolutely loved it.” —Andie Newton, USA Today bestselling author of The Girls from the Beach

“With likable, authentic characters; lush, vivid settings; and secrets galore, the two timelines in The Codebreaker’s Secret collide in spectacular fashion. Throughout, the book will tug on your heartstrings with its heartfelt depictions of grief, longing, hope, and resilience.” —Addison Armstrong, author of The Light of Luna Park

“The Codebreaker’s Secret did not disappoint! Ackerman weaves together the worlds of World War II and 1960s Hawaii with intrepid, smart female characters who must uncover a decades-old mystery that is sure to keep readers guessing to the end. This book is a triumph!” —Julia Kelly, international bestselling author of The Last Dance of the Debutante

“Sara Ackerman never disappoints!” ­—Kate Quinn, New York Times bestselling author of The Rose Code


Author visits with Sara Ackerman are available via NovelNetwork.com.