Sci-fi and thriller are two genres that synergize well. Together, they’ve given us more than a few classics in movies, television, and literature. In the 21st century, writers have continued to combine them in fresh ways, resulting in a new slate of tense, mind-bending gems.
The titles on this list span a range of tones, but all offer something for genre aficionados to sink their teeth into. Whether they’re exploring parallel realities, first contact with aliens, artificial intelligence, deep space exploration, or post-apocalyptic survival, these are the best sci-fi thriller books released over the last quarter-century.
10
‘The Gone World’ (2018)
“The universe isn’t kind or cruel. The universe is vast and indifferent to our desires.” Special agent Shannon Moss works for a secret government agency capable of traveling into possible futures to investigate crimes before they occur. When she begins investigating the murder of a naval officer connected to an experimental deep-space mission, she uncovers evidence pointing toward an approaching apocalyptic event capable of wiping out humanity itself.
From here, The Gone World blends detective fiction, cosmic horror, and time-travel paradoxes into a deeply destabilizing story. Author Tom Sweterlitsch draws on inspirations like J.G. Ballard and Raymond Chandler, as well as conversations he had with his NCIS agent brother-in-law. Although some plot mechanics are fairly conventional for the genre, they’re all immersed in a unique atmosphere of existential dread, and the suspense rarely lets up.
9
‘Altered Carbon’ (2002)
“This is reality, this is self-knowledge, and the perception of it will, of course, make you dizzy.” This book served as the basis for the Netflix show. It’s a cyberpunk banger about a future where human consciousness can be digitally stored and transferred between bodies (as long as you’re rich enough to pay for the procedure, that is). In this world, former elite soldier Takeshi Kovacs is resurrected into a new body by a wealthy businessman who believes he has been murdered, embarking on a dangerous, labyrinthine investigation.
The speculative tech is the real draw here. Devices embedded in people’s spines store their memories and consciousness and can be implanted into new bodies (known as “sleeves”) to effectively prolong someone’s mental life. It’s a controversial practice that religious people refuse to take part in, and it’s governed by strict laws. By controlling two bodies at once, Kovacs is in direct violation of these tenets, making him a riveting and conflicting protagonist to follow.
8
‘Devolution’ (2020)
“It’s great to live free of the other sheep until you hear the wolves howl.” Devolution is a lean, punchy book by World War Z‘s Max Brooks (who also happens to be the son of Mel Brooks and Anne Bancroft). Told through recovered journals and official interviews, the novel follows the residents of an isolated high-tech community in the Pacific Northwest after a volcanic eruption cuts them off from civilization. Their struggle for survival becomes even more desperate when they realize they are being hunted by a tribe of highly intelligent Sasquatch.
While that setup may sound a little ridiculous, Brooks manages to keep it relatively grounded and tension-filled, if not necessarily believable. That said, Brooks approaches the Sasquatch themselves with surprising scientific rigor, presenting them as plausible relics of prehistoric evolution. Not every set piece lands but, overall, Devolution keeps the plot moving briskly and the pages turning.
7
‘Ancillary Justice’ (2013)
“Thoughts are ephemeral. They evaporate in the moment they occur, unless they are given action and material form.” Ancillary Justice welds together elements of space opera and revenge thriller, resulting in one of the most entertaining sci-fi novels of the 2010s. Our protagonist is Breq, the sole surviving fragment of what was once a vast artificial intelligence controlling a massive warship and thousands of human ancillaries. Reduced to inhabiting a single body, she embarks upon a dangerous mission to confront the ruler responsible for destroying her former existence.
Here, author Ann Leckie‘s treatment of consciousness is remarkably original. Breq’s mind is very different from that of any human protagonist: for instance, she has simultaneous memories of countless perspectives. Through her, the book touches on a host of ambitious themes, though never at the expense of narrative momentum.
6
‘Leviathan Wakes’ (2011)
“Violence is what people do when they run out of good ideas.” Leviathan Wakes by James S. A. Corey (the pen name of authors Daniel Abraham and Ty Franck) kicked off the stellar Expanse series, which eventually encompassed nine novels and several short stories. In the first installment, humanity has colonized the Solar System, but tensions between Earth, Mars, and the asteroid belt threaten open war. Amidst this tumult, detective Joe Miller searches for a missing young woman while spaceship officer James Holden inadvertently uncovers evidence of a conspiracy.
One plotline is steeped in noir, while the other is driven by escalating political chaos; both gradually converge in a tense third one. Along the way, the story borrows from Don Quixote of all things, but unfolds in a world of aliens and space-faring frigates, biological replication, and stealth ships equipped with nuclear weapons.
5
‘Recursion’ (2019)
“Every moment is equally real and happening now, but the nature of our consciousness only gives us access to one slice at a time.” In Recursion, detective Barry Sutton investigates a mysterious condition known as False Memory Syndrome, in which ordinary people suddenly remember entire alternate lifetimes that never happened. At the same time, neuroscientist Helena Smith develops revolutionary technology capable of preserving memories in ways that will ultimately reshape humanity’s understanding of time itself.
There are some rather big-brain concepts here, which writer Blake Crouch builds into an ambitious exploration of causality and fate. Refreshingly, though, and unlike many time-travel stories that become overwhelmed by their ever-increasing complexity, Recursion remains emotionally grounded through the central relationship between Barry and Helena. Both characters are likable and full of heart, a nice foil for the mind-bending worldbuilding.
4
‘Station Eleven’ (2014)
“Hell is the absence of the people you long for.” This one was also adapted into a solid TV series. Station Eleven is an unusually thoughtful blend of post-apocalyptic storytelling and literary suspense. After a devastating pandemic destroys civilization within weeks, several interconnected characters try to survive in the wreckage. Among them is the Traveling Symphony, a group of actors and musicians performing Shakespeare across scattered settlements, as well as a dangerous cult leader known only as the Prophet.
A lesser writer might have reduced all this to an action-packed pulp thriller, but Emily St. John Mandel (who also wrote the acclaimed novels The Glass Hotel and Sea of Tranquility) instead uses the plot devices to advance some hard-hitting themes. In particular, rather than focusing solely on the collapse itself, she explores what remains worth preserving after civilization disappears. Considering what would happen just six years after its initial release, Station Eleven is also eerily prophetic.
3
‘Embassytown’ (2011)
“Stories and secrets fight, stories win, shed new secrets, which new stories fight…” Years before Arrival, author China Miéville, the mind behind outré classics like Perdido Street Station, wrote this phenomenal sci-fi story about aliens, language, and communication. Set on a distant world inhabited by an alien species whose language functions in ways fundamentally unlike human speech, Embassytown follows Avice Benner Cho as diplomatic relations between humanity and the native Ariekei begin collapsing after a disastrous first contact initiative.
Communicating with the Ariekei is a challenging feat, requiring two human interpreters working in tandem. Stranger still, the aliens are incapable of lying, as their biology prevents them from saying anything they do not believe to be true. This unique set-up makes them feel genuinely “other,” while also serving as a vehicle for Miéville to interrogate ideas around meaning, the limits of language, and the corrosive effects of lies themselves.
2
‘Project Hail Mary’ (2021)
“We’re as smart as evolution made us.” This banger by The Martian‘s Andy Weir has been all the rage this year thanks to the charming movie adaptation directed by Phil Lord and Christopher Miller. In it, Ryland Grace awakens aboard a spacecraft with no memory of his identity or mission. As his memories slowly return, he discovers that he has been sent across the galaxy on a desperate mission to prevent an extinction-level disaster threatening all life on Earth.
Eventually, Ryland crosses paths with somebody on a similar mission, and the story morphs into an unusual but undeniably heartwarming buddy-comedy adventure. Along the way, Weir keeps readers hooked by turning scientific problem-solving into edge-of-your-seat suspense. Ryland encounters an endless series of problems, each of which demands creative thinking rather than brute force. The author also treats these situations with scientific rigor, with likable characters keeping them from feeling dry.
1
‘The Three-Body Problem’ (2006)
“No, emptiness is not nothingness. Emptiness is a type of existence.” One of the smartest and most ambitious sci-fi books in a long, long time. Beginning during China’s Cultural Revolution, The Three-Body Problem broadens into an extraordinary first-contact mystery. After a series of unexplained scientific phenomena, humanity realizes that an advanced extraterrestrial civilization is preparing to intervene in Earth’s future.
Part of why the novel stands out is that author Liu Cixin builds suspense through discovery rather than action. He stacks mysteries upon mysteries, all of them drawing from real scientific theories. Indeed, this is the hardest of hard sci-fi. The intellectual depth here is off the charts, making The Three-Body Problem a challenging but rewarding read. It has a lot to say about geopolitics, fear of the unknown, and mankind’s place in the universe. It’s also a surprisingly strong statement against nihilism.