I’ve always loved books that ask the question: What if? What if society took a different turn? What if technology became more powerful than people could handle? What if the world we know changed beyond recognition? These are the questions at the heart of speculative fiction, and they fascinate me. Having now written my own speculative thriller, ⱯLFA, set in a future Iceland governed by artificial intelligence, I’ve been thinking about the books that have inspired me and stayed with me over the years.
Here are five of my favourites. And because I’m a writer who apparently can’t stick to the rules, I’ve added a bonus author!

1984, by George Orwell
I first read 1984 when I was very young, and I’ve returned to it many times since. It’s one of those rare books that seems to become more relevant with every passing decade. In fact, it could have been called 2026. Of course, the technology Orwell imagined is different from what we have today. But the methods used by those in power to manipulate, control and frighten people are disturbingly familiar. The distortion of truth, the rewriting of history, the constant surveillance. It’s all there. For me, 1984 is a reminder that technology changes, but human nature, particularly the hunger for power, doesn’t necessarily change with it.
Eden Falls, by Ajay Chowdhury
Eden Falls explores the enormous power of big-tech companies and what happens when that power is accumulated on very few hands. Artificial intelligence, technological manipulation and the frightening influence of billionaires are woven into a story that feels uncomfortably close to reality. But don’t think this is some slow, philosophical exploration of technology. Far from it! This book is so suspenseful that you feel you need to read it at 90 miles per hour just to keep up with the action. It is intelligent, frightening and hugely entertaining, so exactly how I like my thrillers.


The Cure, by Eve Smith
What if we could cure ageing? It’s an exciting premise for a thriller, and Eve Smith takes it in fascinating and disturbing directions. The Cure is thrilling, but it’s also one of those books that leaves you thinking long after you’ve finished reading. Why are we so uncomfortable with ageing, both as individuals and as a society? Why do we worship youth? And what might happen if we suddenly had the power to extend human life dramatically? Smith takes these questions and turns them into a thrilling story about inequality, ambition and the consequences of scientific progress.
The Handmaid’s Tale, by Margaret Atwood
The Handmaid’s Tale is another book I’ve returned to several times. What makes it particularly terrifying is something Atwood herself has pointed out: nothing she describes in the novel is without precedent in human history. Think about that for a moment. Although the world of Gilead is speculative, the oppression it portrays is painfully real. And it seems that whenever tyranny takes hold, one of its first priorities is to subjugate women and control their bodies. This is a powerful, deeply unsettling novel, and sadly one that never seems to lose its relevance.


Fault Lines, by Doug Johnstone
This one has a particularly special place in my heart because Doug Johnstone took something very Icelandic and transported it to Scotland: our unpredictable and dangerous geology with its earthquakes and volcanic activity. Doug was inspired by Iceland when writing this novel, and I absolutely love the connection between the main character and the land beneath her feet. When the earth shakes, something is also shifting in her personal life. The physical instability of the landscape becomes a beautiful reflection of emotional turmoil. It is such an Icelandic thing to do – to connect the main character and the living breathing land itself and I loved Doug’s way of doing it.
And a bonus: Louise Welsh
I simply couldn’t write about my favourite speculative fiction without mentioning Louise Welsh. Her Plague Times trilogy is a hugely impressive exploration of a society devastated by a deadly pandemic. But Louise is equally brilliant at more traditional Tartan Noir. I love her Rilke series, set in Glasgow and featuring a gay protagonist. Her writing is dark, atmospheric, intelligent and wonderfully human.

And perhaps that’s what connects all these books for me. However strange, frightening or unfamiliar their worlds might be, the best speculative thrillers are always about people. That’s certainly what I hoped to achieve with ⱯLFA. Because however much our world changes, the things that make us human remain at the heart of every good story and are what engages us as readers.
Lilja Sigurðardóttir is the author of the chilling speculative mystery, ⱯLFA, translated by Larissa Kyzer, and published by Orenda Books on 5th November 2026.































