The clock may be ticking for Outlander on TV, but the story is everlasting for bestselling author Diana Gabaldon, who writes the historical fantasy books (nine and counting!) upon which the show is based. Debuting in 1991, the first Outlander novel has spawned several sequels, spinoff novellas, and ultimately the intense Starz drama that viewers have come to love. With the final episodes on the horizon and new prequel series Blood of My Blood forthcoming, Gabaldon reflects on the show’s end and offers a peek inside her notebook.

What have you been happy to see so far in Season 7?

Diana Gabaldon: One of the things the Outlander production as a whole does really well is battle scenes. We’ve had a certain amount of the [American Revolution’s] Battle of Ticonderoga, the first Battle of Saratoga, and a lot of the second Battle of Saratoga. And I absolutely loved the actor playing Benedict Arnold, Rod Hallett. The casting this season has been spectacular. Every character is just right.

Would you say that Benedict Arnold was the character you were most excited for fans to meet this season?

He is historically fascinating, and I did a lot of research work on him because he plays a large part in more than one of the books. And we’ll see him again in Book 10. His story is very interesting. Everybody knows how his story ends, or at least they think they do. But yes, I was just impressed that, between the script and the actor, they pretty much nailed him and captured his sense of reckless adventure and his charm. Luckily, they used a lot of the book dialogue for it, some of which was taken from things that Benedict Arnold himself said.

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With the show set to conclude with Season 8, do you have an ending in mind for Claire and Jamie’s story on the page?

Yes, I have shared the ending scenes with [the creative team]. But as to the actual way the story comes to a conclusion? No, they don’t know that. [Laughs] But we’ll get there. I don’t write in a straight line, and I don’t work with an outline. This is why it takes me several years to write one book — not only the way that I write, which I describe as like playing Tetris in my head, but also just the sheer size and the fact that they are books of a continuing nature.

You’ve shared a few excerpts from your 10th novel in the series. Is there anything else you can tease about it?

Well, I’m still writing it. And I have a title, but I’m not revealing that until we’re a bit closer to publication. I don’t want to rub all the “new” off it. I can tell you that it’s got whales.

You’ve also written Season 2’s “Vengeance Is Mine,” “Journeycake” in Season 5, and the upcoming 14th installment in Season 7. Can we anticipate more scripts from you?

Yeah, it’s so much easier than writing novels. [Laughs] It takes me three weeks tops to write a scene. I will be writing a script for the prequel [Blood of My Blood] and one for Season 8 [of Outlander].

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Though only one season has been given the green light, how long do you envision the prequel’s story to be onscreen?

Well, the television version isn’t up to me, but for what it’s worth, I have material for three —  relatively short, as compared to the main Outlander novels — prequel books concerning Jamie’s parents. Blood of My Blood is based on the synopsis of the first of those books.

Apart from the ones you’ve written, are there any episodes you love so much that you wish you had?

Oh, yeah. There’s always at least one per season where I’m thinking, “Oh, this is fabulous.” It would be [Episode 8, “Turning Points”] for Season 7.

Do you have a favorite memory from your times visiting the set?

It would probably be the first season where they invited me to do a cameo [as Iona MacTavish] in Episode 4. It was fascinating being part of the set rather than visiting it. I was a cast member for three days. It was just interesting to see how it all worked.

Were you able to make it to set for Season 8?

God willing, I will be on set for a week or so next month [September 2024]. They’ll be filming the final block, for which I wrote one of the scripts, so I’d like to see a bit of it live. The last time I was on set for a prolonged period — as opposed to drop-in visits — was for Season 2’s “Vengeance Is Mine.” The food from craft services was always excellent, so I’m hoping to have a toastie, and I’m looking forward to seeing good friends.

How have the main cast’s performances surpassed what you envisioned on the page?

Sam Heughan does a fantastic job with Jamie, and Caitríona [Balfe], while she doesn’t look like the Claire of the books, certainly acts like her and is totally immersive in her character. I’ve [never] seen a bad performance by anyone at any level.

What will you miss most about the show?

I’ll miss the entertainment value of seeing dailies five nights a week, but otherwise, I’m not troubled. The end of a great adventure is always a bit traumatic and nostalgic — but it does leave you with a feeling of specialness, accomplishment, of having been part of a great endeavor. And they do live in my head, you know…

Are there more stories in this universe that you still wish to explore?

There’s always more I could write. Making the optimistic assumption that I’m going to live long enough, I have notes for [time traveler] Master Ray-Mond’s book (no title on that one yet) and for another [about Claire’s first husband, Frank], titled What Frank Knew.

Will you feel sad saying goodbye to Jamie and Claire?

I really don’t think I will — the main books are written with a lot of lacunae — spaces where we move from one block of story to another, leaving a hiatus of months (or sometimes years) in someone’s life. I can, should I want to, always go back to one of those places and write what happened while everyone was looking somewhere else.