"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

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.

Don't miss THE GUEST IN ROOM 120, Sara Ackerman's enthralling new novel with dual-timelines intertwining a 1905 mystery surrounding Jane Stanford's mysterious death in Honolulu and a 2005 writer's quest to uncover the truth at the same historic hotel...

More captivating stories from Sara Ackerman:

• The Maui Effect
• The Unchartered Flight of Olivia West
• Radar Girls
• Red Sky Over Hawaii
• The Lietenant's Nurse
• Island of Sweet Pies & Soldiers