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Quinn had been carrying Bletchley Park as a potential setting for years before a visit to the site itself forced a decision. What finally pulled her from general fascination to full commitment was arriving at the place in person, on a driving tour through the UK.
By the time I visited BP on a driving tour through the UK, I was a goner. I knew I had to tell a story about this place.
Once she committed to Bletchley Park as a setting, the question of whose story to tell was shaped by a disproportion in the existing record. Women made up the majority of the wartime workforce, but the books Quinn had read before writing her own largely ignored them.
Most of the books I’d read about BP were about the male codebreakers, yet women were by far the majority of the workforce by the end. I wanted to explore a story about the ladies instead!
Her two previous WWII novels had given her heroines immediate, visible physical danger: a spy could be arrested and shot; a bomber pilot could be downed over enemy territory. Bletchley Park had nothing equivalent, and Quinn had to decide whether that absence disqualified the story before she had written a word.
When I began drafting The Rose Code, I realized just how much of a departure this book was going to be for me. My two previous books were about women spies (The Alice Network) and female bomber pilots (The Huntress)—both professions with a hefty dose of built-in danger and drama. My Bletchley Park heroines, by contrast, are in very little physical danger; they spend the majority of their war safe in little green huts in the countryside, scratching away at cryptograms with pencil stubs. Their war, unlike that of the Alice network operatives and the Night Witches, is fought in the intellectual arena rather than the physical . . . but for all that, it’s no less grueling or heroic.
She pressed ahead anyway, and her stated reason has nothing to do with narrative strategy.
Quinn describes herself as not naturally mathematical, which made the codebreaking subject a genuine personal obstacle rather than an abstract one. What cleared it was something closer to obligation than confidence.
I admire these women so intensely that it felt like I had to at least try to tell their stories, mathy person or not.
Before Quinn could decide whose story to tell, she had to reckon with the sheer size of the population she was trying to represent. The numbers she encountered in research made the selection problem concrete.
At its peak in 1945, there were 8,988 people working at or around Bletchley Park. 6,757 of those were women. That is 6,757 potential stories. [paraphrased from audio]
The answer to that selection problem came from a technical feature of how Bletchley Park actually operated. Compartmentalization at the site was so rigid that workers in one room had no knowledge of what happened in the next, meaning no single woman could have witnessed the full intelligence process. Quinn turned that constraint into a structural reason for multiple narrators, placing each heroine at a different stage of the code-breaking chain.
I knew it would have to be a multiple heroine story because I wanted the reader to walk away with the idea that Bletchley Park itself was something of a character in its own right. And also to walk away with an understanding to some degree of how it is that encrypted intelligence moved through those gates and then almost went on a sort of conveyor belt of different stations where everyone did their different piece to it and then came out again as usable intelligence that could be deployed in the field. [paraphrased from audio]
With narrators placed across the intelligence process, Quinn still faced a craft problem specific to this subject: how to make mental work feel as urgent as physical danger. Her solution was to separate two distinct responsibilities, one hers and one belonging to nonfiction.
it’s not my job to tell you how to break Enigma codes. But it is my job to tell you how it feels to break Enigma codes.
The post-war 1947 timeline, which pulls the three women back together after years of enforced silence, needed its own engine. History provided one: a documented Soviet mole had been active at Bletchley Park. But even before Quinn had worked out that structural solution, one image had been sitting at the center of the book, unchanged through every round of research and revision.
One of the very first images I had of this book—back when I had no idea who my heroines would be, or what their names were, or what had happened between them—I knew exactly what my opening image was: a ciphered letter arriving in the mail for two women hundreds of miles apart, sent from behind the gates of an asylum by an enemy they haven’t spoken to in years, containing a desperate cry for help. That opening image never changed, throughout all the many edits and plot shifts and research tweaks!
Quinn’s attraction to Bletchley Park was never purely historical. Part of what she kept returning to in interviews was an almost personal identification with what the place made possible for the women who worked there, an environment that prized the qualities that made them unusual.
Bletchley Park itself: a marvelously weird Wonderland of a place where smart, quirky people thrived and made their voices heard—especially women.
The institutionalization of one of her characters, Beth, had a factual basis: at least one actual Bletchley Park woman was committed to an asylum after a breakdown, in part because authorities feared she might leak classified information in a vulnerable state. Writing that character meant sitting with what confinement specifically costs someone whose defining trait is her mind. Quinn’s annotation in her Goodreads notes captures how she framed the stakes.
Her experience was the inspiration for Beth’s incarceration, which is the purest form of hell to a woman whose brilliant mind is her greatest asset.
When the war ended, Bletchley Park workers were dismissed with instructions to say nothing about what they had done, and most of them complied for the rest of their lives. Quinn wants readers to feel the weight of that choice against the backdrop of a present in which continuous public self-disclosure is ordinary.
workers were more or less told, thank you for your service, go home now that the war is over, and never talk about this again, please. And I think that’s an astounding factor to a modern audience.
The argument Quinn makes for intelligence work as a form of combat is not rhetorical. She makes it from military logic: weapons without targeting information cannot be deployed, which means the people who produced that information were as necessary to Allied victories as any soldier.
you can have all the bombs, all the arrows, all the spears, all the planes and warships in the world—if you don’t know where to send them, where to deploy them, they are useless. [paraphrased from audio]
Quinn closes her Goodreads annotations not with craft notes but with a statement of purpose that runs across all of her work. It explains why she keeps returning to women the historical record treated as peripheral, and why she frames that work as both duty and pleasure.
women fight too, often heroically and often in the shadows, and I live for finding such women in the cracks of the history books. They lived, and they are legion. If I live to be a hundred, I will never run out of amazing historical women who fought tooth and nail for their countries, their families, and their lives—it is my pleasure and my privilege to help shine a little more light on their achievements, so they can receive the credit they deserve.