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Poldark hasn't even begun its third series yet, but we already know it will be back for a fourth in 2018. Whoop!
But what about after that? There are plenty of books in the Winston Graham series to be covered, 12 in fact.
TV show writer Debbie Horsfield said earlier this year that she and her team have yet to start working on a fifth series, and will wait to see if the third and fourth remain popular with viewers.
"We don't know how popular it's going to be; whether it'll continue to be popular, whether we'll be asked to do more," Debbie told Digital Spy and other publications.
Producer Karen Thrussell added: "So at the moment, obviously, we're working on series four, and then if series five goes ahead..."
"We'll have to consider what will be in that series five," Debbie said.
What to Read Next
After the seventh Poldark novel, The Angry Tide, the story has an 11-year time jump. And this is something Debbie hasn't ruled out featuring in a future series.
She added that she doesn't like to stray too far from Graham's source material. "To be honest, the thing is, we are huge fans of the books. I don't see any point in doing an adaptation if you're just going to go, 'We'll ignore the books.'
"The books are tremendous feats of storytelling and characterisation. The challenge usually is to do with the sheer massive material. And of course, the experience of reading the book is very different to the experience of consuming a television show.
"So the way of telling the story, the way of constructing the narrative, it has to be different for television. In the books, as a reader, you're very happy for the story to meander off at a tangent, and you go with it willingly because you're drawn into it.
"But you can't have that kind of meandering in serial storytelling. It's more about marshalling the material into stories of the week; making sure each episode is self-contained and satisfactory in its own right, while still continuing the overarching story."
And don't expect series 3 to wrap everything up, either. "We never like to wrap things up," she added. "We always want to leave the door open to the possibility, and keep people thinking, 'We want more of this.'
"And to be honest, if we ever did get all the way up to book 12 – and there are no more books after that – I still think you'd finish book 12 and think, 'Oh, now what is going to happen?'"
Poldark returns on Sunday, June 11 at 9pm.
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