1940, Bletchley Park, Buckinghamshire. Three completely different women are chosen to work at the mysterious Bletchley Park, where the best minds in Britain are engaged in decoding German military codes.

The lively debutante Osla has the charming Prince Philip of Greece at her feet, but she is burning to prove that she is more than just a socialite, working as a translator of the decoded secrets of the enemy. The self-made Mab excels at handling the decoding machines, hiding her old traumas and her origins from the poor neighborhoods of East End London. And the shy Beth from the nearby village is the outsider training as one of the few cryptanalysts at Bletchley Park.

1947, London. On the eve of Princess Elizabeth's royal wedding to Prince Philip, seven years after the three women first met, disaster looms. Osla, Mab, and Beth have become estranged, their friendship shattered by secrets and betrayals, but now they must race against time to break one last code before it’s too late for them and their country.

They said about the book: "Quinn returns to World War II with a new gripping epic. Her compelling narrative is enriched by the rich characterization and the thrilling techniques of code-breaking, as they come alive through her detailed historical descriptions, and once again, she does not disappoint our expectations." –Publishers Weekly

“Heartfelt, thrilling, and mysterious, Quinn's new novel is likely to appear on the best seller lists of 2021.” –Booklist

“A historical fiction novel that captivates you.” –Kristin Hannah

“If you are a fan of historical fiction featuring strong female characters and espionage action, be sure to add Kate Quinn's new novel to your list.” –CNN.com–Heather Webb, author of Rodin’s Lover

Kate Quinn is a writer of historical novels. The Alice Network made it to the best seller lists of the New York Times and USA Today, was selected by Reese Witherspoon’s book club, has been translated into 28 countries, and is set to be adapted into a TV series by Tristar Television. Her book The Huntress is also published by Klidarithmos Editions.