I Investigated the World’s Bestselling Authors. They All Had Something in Common.

HIIII REBƎLS!!! I have a confession. My investigation into Freida McFadden’s publishing career has officially become a problem. It started with one author. Then I opened Stephen King’s bibliography. Then Nora Roberts. Then Philippa Gregory. By the time I reached Sarah J. Maas, I had thirteen browser tabs open, a notebook covered in publication dates and absolutely no intention of stopping. I wanted to know something very simple.

How many books had the world’s bestselling authors actually published before they became the names everybody recognises? More importantly, what happened to their publishing careers afterwards? Did they produce books every year? Did they create enormous series? Did they disappear for years between releases? Did films turn their novels into international sensations? I decided to investigate. Some of the numbers are ridiculous.

THE BOOKSHELF INVESTIGATION

First, I needed a starting point. So I chose thirteen authors whose careers stretch across psychological thrillers, fantasy, romance, historical fiction, horror and literary fiction. I looked at their debut publications, significant turning points, series, original books and screen adaptations. Naturally, I discovered that counting books is considerably more complicated than it sounds.

Authors have novels, novellas, short stories, collaborations, revised editions, collections, companion books and books published under different names. Stephen King alone could keep a researcher occupied for a week. I eventually decided the investigation was about original publishing careers, rather than counting every cover that has ever appeared in a bookshop. Now, REBƎLS, look at this.

Look at that spread. Some of these writers have been publishing since before I was born. Others began their careers just over a decade ago. They all occupy the same enormous world of commercial publishing, yet their bibliographies tell dramatically different stories. Let’s open a few.

STEPHEN KING: SOMEONE PLEASE CHECK HIS TYPEWRITER

Stephen King’s first novel, Carrie, appeared in April 1974. ‘Salem’s Lot followed in 1975. The Shining arrived in 1977. The Stand appeared in 1978. That’s already four major novels within five calendar years. But there’s an extra detail I particularly enjoyed discovering. King was also publishing fiction as Richard Bachman.

Rage, The Long Walk, Roadwork and The Running Man emerged under that other identity across the late 1970s and early 1980s. Apparently one name wasn’t enough to contain all the stories. Then came Cujo, Christine, Pet Sematary, It, Misery and many, many others. Some authors spend decades creating one iconic fictional monster.

King created enough nightmares to populate an entire country. His official bibliography also reveals how his work expanded beyond standalone novels. There’s The Dark Tower, the connected Castle Rock stories, short-fiction collections, collaborations, nonfiction and adaptations. Fifty-two years after Carrie, the catalogue continues growing. I started counting. I stopped counting. My Coke Zero was getting warm.

INVESTIGATION NOTE: Stephen King built a career across decades, genres, series, pseudonyms and formats. His bibliography is practically an entertainment industry of its own.

NORA ROBERTS: WHAT DO YOU MEAN, MORE THAN TWO HUNDRED BOOKS?!

I knew Nora Roberts was prolific. I did not fully appreciate how prolific. Her first published novel, Irish Thoroughbred, appeared in 1981. Over the following decades, she created a catalogue of more than 200 books, including contemporary romance, romantic suspense, family sagas, trilogies and the futuristic In Death mysteries written as J. D. Robb. Two names. Several fictional worlds. Hundreds of books.

here I am occasionally staring at a sentence for twenty minutes because I can’t decide whether a character should say perhaps or maybe. The In Death series began with Naked in Death in 1995. That fictional universe alone has continued across decades, giving readers an ongoing relationship with Eve Dallas, Roarke and an expanding cast of characters.

One of the most fascinating aspects of Roberts’s catalogue is how many different kinds of reading experiences it contains. A reader might discover her through a standalone romantic suspense novel. Another might begin with a trilogy. Someone else might spend years following the In Death series. The bibliography becomes several connected entrances into the author’s work. then I realised I still had twelve other authors to investigate.

J.K. ROWLING: SEVEN BOOKS AND TEN YEARS OF HOGWARTS

J.K. Rowling published Harry Potter and the Philosopher’s Stone in 1997. The principal series followed this schedule:

Seven books in ten years. But here’s what interested me. The first four appeared in four consecutive years. Then the release pattern changed. Readers waited three years for the fifth book, two for the sixth and two for the final instalment. Meanwhile, the Harry Potter films began appearing in cinemas in 2001. The books, films, merchandise and enormous international readership turned Hogwarts into something far bigger than a seven-novel series.

Rowling later published The Casual Vacancy in 2012 and began the Cormoran Strike detective series under the name Robert Galbraith in 2013. Another pseudonym! At this point I began wondering whether successful authors secretly collect second identities the way other people collect fountain pens.

SARAH J. MAAS: THREE WORLDS AND A LOT OF OBSESSED READERS

Sarah J. Maas published Throne of Glass in 2012. The original series eventually grew to eight volumes when its prequel-story collection is included. Then something interesting happened. While Throne of Glass was still being published, Maas launched A Court of Thorns and Roses in 2015. She was developing one series while beginning another. in 2020 came House of Earth and Blood, the first Crescent City novel.

Three major series. Not necessarily one book at a time. Her official reading guide currently lists eight Throne of Glass volumes, five published ACOTAR volumes with further releases announced, and three Crescent City novels. That’s sixteen published volumes across the three series before counting the forthcoming releases. those books aren’t tiny little things, either. Seriously.

Some of them could probably be used to hold a door open during a hurricane. What fascinated me was the overlap. 2012–2018: The Throne of Glass publication era.

2015 onward: A Court of Thorns and Roses. 2020 onward: Crescent City. Rather than treating every series as a completely separate career, Maas built several bodies of fantasy fiction under the same author identity. Her stories also encourage intense discussion of fictional worlds, characters and relationships. Readers debate everything. Theories. Romantic pairings. Character motivations.

Who should end up with whom. Occasionally I suspect somebody could announce a diplomatic summit to resolve an ACOTAR argument and millions of people would attend. the bibliography is still expanding.

REBECCA YARROS: BEFORE THE DRAGONS

Rebecca Yarros published Full Measures in 2014. It was the beginning of her Flight & Glory romance series. Yes, romance. Years before the dragons. By the time Fourth Wing appeared in 2023, Yarros had already established a publishing career across military romance, contemporary romance and emotionally intense standalone fiction.

Her earlier books included the Flight & Glory novels and works such as The Last Letter. Then came Basgiath War College. Violet Sorrengail. Xaden Riorson. Dragons. The Empyrean series brought her work to an enormous fantasy-romance audience. Nine years separate Full Measures and Fourth Wing.

That’s a particularly fascinating detail because someone discovering Yarros through dragon riders has an entirely different earlier bibliography to explore. I have to say, the transition from military romance to military dragon riders is rather magnificent.

COLLEEN HOOVER: THE SERIES, THE STANDALONES AND THE SECOND LIFE OF OLD BOOKS

Colleen Hoover’s debut novel, Slammed, appeared in 2012. Her official catalogue now contains several series alongside standalone novels. There’s Slammed. There’s Hopeless. There’s Maybe Someday. Then come titles such as Ugly Love, November 9, Confess, Verity and It Ends with Us.

Her bibliography contains a mixture of connected stories and individual novels, and the release years reveal periods of considerable activity. But one part of her publishing history is particularly entertaining to study. It Ends with Us was published in 2016. Years later, the book experienced a huge resurgence through reader recommendations on TikTok. Then It Starts with Us arrived in 2022.

A novel published six years earlier was once again dominating conversations. Now imagine what that must feel like. You write a book. You publish it. You continue with your career. Years pass. Then readers make that earlier book one of the most discussed titles on the internet. Somewhere in the middle of all this, Verity was also developing an enormous readership.

I love publishing histories because the dates reveal stories that bestseller lists alone cannot tell.

PHILIPPA GREGORY: THIRTY-NINE YEARS OF HISTORY, MURDER AND TERRIBLE ROYAL HUSBANDS

Philippa Gregory published Wideacre in 1987. She wrote it while completing her PhD in eighteenth-century history and literature. That alone is an impressive opening act. Her bibliography expanded through historical fiction, modern novels, series and nonfiction. But it was The Other Boleyn Girl, published in 2001, that became one of her defining works. Fourteen years after Wideacre.

The novel was adapted for television in 2003 and for cinema in 2008. honestly, Tudor history is astonishing material for fiction. Marriage negotiations. Political conspiracies. Religious upheaval. Executions. Relatives betraying relatives. Occasionally an attractive man. Usually a very dangerous one. Gregory subsequently created an extensive group of Plantagenet and Tudor novels. Her official website currently lists seventeen titles in that collection.

SEVENTEEN. that’s one area of her bibliography. She also has the Wideacre trilogy, the Tradescant novels, the Fairmile series and other work. I particularly enjoyed discovering that The Other Boleyn Girl came fourteen years after her debut. A single famous title can make an author appear to have arrived fully formed. The bibliography usually tells a much longer story.

NICHOLAS SPARKS: THE MAN WHO MADE EVERYBODY CRY

Nicholas Sparks published The Notebook in 1996. Then came Message in a Bottle in 1998. A Walk to Remember in 1999. The Rescue in 2000. A Bend in the Road in 2001. Nights in Rodanthe in 2002. In 2003, he published both The Guardian and The Wedding. The list continues through Dear John, The Last Song, Safe Haven, The Lucky One and many others.

His official biography lists a substantial succession of novels from 1996 through Counting Miracles in 2024. then there are the films. The Notebook. A Walk to Remember. Dear John. The Last Song. Safe Haven. Honestly, Mr Sparks, WHAT HAVE YOU GOT AGAINST OUR TEAR DUCTS? His publishing record shows two fascinating activities taking place alongside each other. New novels continued appearing.

Existing novels reached audiences through film adaptations. A person who had never picked up one of his books could encounter the story at the cinema. The film might then bring that person back to the original novel. It’s a fascinating career built around books that keep acquiring new lives.

DIANA GABALDON: NINE VERY LARGE BOOKS

Diana Gabaldon published Outlander in 1991. Thirty-five years later, the main series contains nine published novels. Nine. Now compare that with Nora Roberts. Nine novels in one major series versus a bibliography exceeding two hundred books. I absolutely love how dramatically different these careers are. Gabaldon’s books are enormous.

Her Outlander series combines historical fiction, time travel, romance, political drama and an extraordinary amount of research. The ninth major instalment, Go Tell the Bees That I Am Gone, appeared in 2021. The tenth is in development. The first novel also became the basis of the television adaptation that premiered in 2014, twenty-three years after the book’s original publication.

TWENTY-THREE YEARS. Imagine a story continuing to grow for more than two decades before taking on a huge new life on television. That’s the sort of publishing-history detail that makes me open another browser tab.

DAN BROWN: EIGHT NOVELS. TWO HUNDRED AND FIFTY MILLION COPIES IN PRINT.

Now for my favourite numerical surprise. Dan Brown’s official website lists eight original novels through 2025. Eight. Let’s go through them:

His publisher and official site report more than 250 million copies in print worldwide. EIGHT NOVELS. MORE THAN 250 MILLION COPIES IN PRINT. I stared at those numbers for a while. Then I remembered that The Da Vinci Code became an international sensation and a major film starring Tom Hanks. The Robert Langdon character subsequently returned in multiple novels, while film adaptations expanded the audience.

The most recent novel, The Secret of Secrets, appeared in September 2025, eight years after Origin. Eight years between those two releases. what an interesting contrast with the authors publishing several novels within twelve months. This is why comparing actual records is so entertaining. The same international book market contains astonishingly different publishing rhythms.

ELENA FERRANTE: FOUR NOVELS, ONE ENORMOUS STORY

Elena Ferrante published Troubling Love in 1992. Her early bibliography includes The Days of Abandonment and The Lost Daughter. Then came the Neapolitan novels. My Brilliant Friend appeared in Italy in 2011. The Story of a New Name followed in 2012. Those Who Leave and Those Who Stay in 2013. The Story of the Lost Child in 2014. Four volumes in four consecutive years.

But here’s the really interesting discovery. In an interview discussing her writing process, Ferrante explained that she began the story in 2009 and had worked through the larger narrative before the decision to publish it in several volumes. While readers were discovering the early books, she continued revising and completing the later ones. So those four publication dates conceal a substantial amount of work that had already taken place.

The series eventually became an acclaimed television adaptation. Ferrante managed to create an extraordinary international literary identity while keeping her personal identity private. I find the whole career absolutely fascinating.

ISABEL ALLENDE: FROM THE HOUSE OF THE SPIRITS TO FOUR DECADES OF FICTION

Isabel Allende published The House of the Spirits in 1982. Her bibliography subsequently expanded across novels, memoirs, historical fiction, stories for younger readers and works deeply concerned with family, memory, history and exile. Among the novels are Of Love and Shadows, Eva Luna, Daughter of Fortune, Portrait in Sepia and The Japanese Lover. Her career has now stretched across forty-four years.

just this month, October 2026, she received Spain’s prestigious Premio Planeta for La hora antes del alba, a story returning to the world of The House of the Spirits. Think about that. A fictional world introduced in 1982. A major literary event connected to that world in 2026.

FORTY-FOUR YEARS. At that point, I closed my notebook for a moment. I needed to appreciate just how remarkable that was.

THE COMPARISON THAT MADE ME LAUGH

When I put the publishing records beside one another, the differences were wonderful. Now, tell me this isn’t fascinating. Nora Roberts has written hundreds of books. Dan Brown has published eight novels. Diana Gabaldon’s nine main Outlander books have occupied more than three decades. Sarah J. Maas has developed several series with overlapping publication schedules.

Elena Ferrante prepared an enormous connected story that became four annual releases. Isabel Allende is still returning to fictional worlds she introduced more than forty years ago. I was originally looking for similarities. Instead, I found publishing careers that seem to operate according to entirely different calendars.

THEN I NOTICED WHAT CONNECTED THEM

Something interesting kept appearing in my notes. The book that made an author internationally famous wasn’t always the first book they published. Philippa Gregory had Wideacre fourteen years before The Other Boleyn Girl. Rebecca Yarros had Full Measures nine years before Fourth Wing. Dan Brown published three novels before The Da Vinci Code appeared in 2003.

Several authors built extensive catalogues under more than one series or name. Others concentrated enormous creative energy on one long fictional universe. films or television adaptations sometimes arrived decades after the original novels. Different publication schedules. Different genres. Different readers. But so many examples of writers whose published stories continued finding new audiences as their careers evolved.

That’s the part I found most compelling. Books published years earlier can suddenly become somebody’s next favourite read. A series can occupy a reader’s imagination for decades. A film can introduce an old story to a new generation. A character can follow an author from a debut novel to the international bestseller lists. I had started by counting books.

I ended up drawing arrows between publication dates, series, adaptations and decades of literary history. My notebook looks like an investigation into organised crime. Except everybody involved is selling novels.

AND NOW I HAVE ANOTHER QUESTION

After spending far too much time in these bibliographies, I’m fascinated by what happens when an author becomes associated with a particular kind of story. Readers hear Stephen King and think horror. They hear Nicholas Sparks and prepare tissues. They hear Sarah J. Maas and start discussing faeries, wings and fictional men with questionable emotional communication skills.

They hear Dan Brown and expect secrets, symbols and people running through historic European buildings. those associations lead us into the final part of this investigation. Because while I was studying authors, I kept noticing how readers were gathering around particular types of books. Hockey romance. STEM romance. Romantasy. Psychological thrillers. BookTok obsessions. Tropes that suddenly seem to be everywhere. Which got me wondering…

What happens when an entire genre becomes the next big obsession? REBƎLS, that is where we’re going next. Now, if you’ll excuse me, I need to return to my own manuscript. I have spent an alarming amount of time investigating other people’s books, and my characters are becoming increasingly impatient.

WRITING A LOT ISN’T A CRIME, REBƎLS!

Here’s one final thing I want to say, REBƎLS. Look at these authors. Look at their bibliographies, their publishing schedules and the enormous number of books they’ve written. Some were publishing several novels a year long before generative AI existed. Stephen King, Nora Roberts, Philippa Gregory and so many others built extraordinary catalogues through years of writing. Yet nowadays, the moment an author publishes books frequently, somebody inevitably starts shouting, “AI!” Seriously?! Since when did productivity become suspicious? Since when did writing quickly mean someone couldn’t possibly have written the words themselves?

Some authors write slowly. Others write incredibly fast. Some plan every chapter, while others discover the story as they go. We all have different methods, routines and working rhythms. So perhaps it’s time we stopped treating prolific authors as though they owe the internet an explanation for every book they finish. Sit down, write, edit, publish, repeat. That’s how books get written, REBƎLS. Sometimes the great mystery behind a very long bibliography is simply a writer who keeps writing.

Love you, REBƎLS!
Lupe