The best science fiction books for grown-ups

Why am I passionate about this?

Science fiction for grownups not only means avoiding magic and supernatural elements but grounding the stories’ “what-ifs” in hard science and/or narrative anthropology. When we (readers) are invited to a story, we come with a willing suspension of disbelief, and I have as strong a suspension of disbelief as anyone—what if dinosaurs could be grown from ancient DNA, or what if an asteroid struck the earth? However, the ground rules of what-ifs should be laid out and should not include a sweeping suspension of the laws of physics, nature, and common sense. So, no hundred-and-ten-pound woman, with toothpick arms and dressed in cleavage-revealing spandex, beating up twelve burly guys.


I wrote...

A Hope in Hell

By Darrell Keifer,

Book cover of A Hope in Hell

What is my book about?

A hellish apocalypse reduces the human population to numbers so low that future generations will inbreed and degenerate. Survivors turn to Hell’s Gate, an experimental sedation prison, to secure more females for world repopulation. They must depend on a damaged psychologist, Jason Adams, to select which female inmates to revive. While searching the prison, an accident revives a serial killer, and inmates take over the asylum.

Adams must use his heart and not his head to save the woman he loves and save the world from a madman.

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The books I picked & why

Book cover of The Mote in God's Eye

Darrell Keifer Why did I love this book?

I loved the complex plot structure and the moral questions!

Earth discovers a sentient civilization with the potential to surpass our own. But the aliens are trapped in a solar system that they cannot escape without Earth’s faster-than-light technology. How should Earth respond? 

What would I do in that situation? 

By Larry Niven, Jerry Pournelle,

Why should I read it?

1 author picked The Mote in God's Eye as one of their favorite books, and they share why you should read it.

What is this book about?

Aliens - Moties - were first contacted in AD3017 in the region of space known as the Coalsack. The eponymous mote in his eye, which has winked out, much to the distress of pious Himmists, just might have been Motie laser light. It might even indicate the position of their home planet.


Book cover of Godspeed

Darrell Keifer Why did I love this book?

I love Charles Sheffield’s good, hard science fiction. An astronomer and mathematician, Charles Sheffield, could craft plotlines supported by hard science like few others.

I'm drawn to his competent, realistic characters and the way his narratives create drama reminiscent of Edgar Rice Burroughs. Unfortunately, he passed away in 2002. 

By Charles Sheffield,

Why should I read it?

1 author picked Godspeed as one of their favorite books, and they share why you should read it.

What is this book about?

Jay Hara is an ordinary young man growing up on the isolated planet of Erin. But Jay dreams of adventure and escapades and the legend of the lost “Godspeed” drive which allowed humans to travel at faster-than-light speeds.

His life changes when he joins up with the seedy spacer, Paddy Enderton and Captain Daniel Shaker. Captain Shaker is a charming but ruthless adventurer who inspires both fear and admiration in equal measure, and he and his questionable crew are joined by Jay as they race to find the legendary drive Jay Hara used to dream about.

Godspeed is a true…


Book cover of Project Hail Mary

Darrell Keifer Why did I love this book?

I love the fast-paced, imaginative plot and the hard science.

Andy Weir takes a futuristic “what-if” and plays it out with vision and relatable characters. This follows the tradition set in his previous book, The Martian

Having been a substitute teacher myself, the protagonist, a Junior High School teacher, is delightful. 

By Andy Weir,

Why should I read it?

23 authors picked Project Hail Mary as one of their favorite books, and they share why you should read it.

What is this book about?

Ryland Grace is the sole survivor on a desperate, last-chance mission—and if he fails, humanity and the earth itself will perish.

Except that right now, he doesn’t know that. He can’t even remember his own name, let alone the nature of his assignment or how to complete it.

All he knows is that he’s been asleep for a very, very long time. And he’s just been awakened to find himself millions of miles from home, with nothing but two corpses for company.

His crewmates dead, his memories fuzzily returning, Ryland realizes that an impossible task now confronts him. Hurtling through…


Book cover of Quietus

Darrell Keifer Why did I love this book?

I love anthropology, so what could be better than an alien anthropologist who visits 1350 Earth to study the Black Plague, hoping to find clues to help her civilization respond to a different plague?

Anthropological principles presented through narrative storytelling define science fiction for grownups. 

By Tristan Palmgren,

Why should I read it?

1 author picked Quietus as one of their favorite books, and they share why you should read it.

What is this book about?

In medieval Italy, Niccolucio, a young Florentine Carthusian monk, leads a devout life until the Black Death kills all of his brothers, leaving him alone and filled with doubt. Habidah, an anthropologist from an alien world racked by plague, is overwhelmed by the suffering. Unable to maintain her neutrality, she saves Niccolucio from the brink of death. Habidah discovers that neither her home's plague nor her assignment on Niccolucio's ravaged planet are as she's been led to believe. Suddenly the pair are drawn into a worlds-spanning conspiracy to topple an empire larger than the human imagination can contain.

File Under:…


Book cover of Six Wakes

Darrell Keifer Why did I love this book?

I’m drawn to this futuristic murder mystery because it lays out the rules of the “created world” and invites the reader to solve it. A murderer and a limited number of suspects/victims are all confined on a spaceship.

I love the setup, and I was immersed from the start.

By Mur Lafferty,

Why should I read it?

5 authors picked Six Wakes as one of their favorite books, and they share why you should read it.

What is this book about?

In this Hugo nominated science fiction thriller by Mur Lafferty, a crew of clones awakens aboard a space ship to find they're being hunted-and any one of them could be the killer.

Maria Arena awakens in a cloning vat streaked with drying blood. She has no memory of how she died. This is new; before, when she had awakened as a new clone, her first memory was of how she died.

Maria's vat is one of seven, each one holding the clone of a crew member of the starship Dormire, each clone waiting for its previous incarnation to die so…


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Returning to Eden

By Rebecca Hartt,

Book cover of Returning to Eden

Rebecca Hartt Author Of Rising From Ashes

New book alert!

Why am I passionate about this?

Author Idealistic Storyteller Teacher Mother Seeker

Rebecca's 3 favorite reads in 2023

What is my book about?

Looking for clean romantic suspense with spiritual undertones?

Look no further than the Acts of Valor series by Rebecca Hartt. With thousands of reviews and 4.7-5.0 stars per book, this 6-book series is a must-read for readers searching for memorable, well-told stories by an award-winning author.

A dead man stands on her doorstep.

When the Navy wrote off her MIA husband as dead, Eden came to terms with being a widow. But now, her Navy SEAL husband is staring her in the face. Eden knows she should be over-the-moon, but she isn’t.

Diagnosed with PTSD and amnesia, Navy SEAL Jonah Mills has no recollection of their fractured marriage, no memory of Eden nor her fourteen-year-old daughter. Still, he feels a connection to both.

Unfit for active duty and assigned to therapy, Jonah knows he has work to do and relies on God, who sustained him during captivity, to heal his mind, body, and hopefully his family.

But as the memories lurking in his wife's haunted eyes and behind his daughter's uncertain smile begin to return to him, Jonah makes another discovery. There is treachery in the highest ranks of his Team, treachery that not only threatens him but places his new-found family in its crosshairs.

Returning to Eden

By Rebecca Hartt,

What is this book about?

Presumed Dead, Navy SEAL Returns Without Memory of His Ordeal in the Christian Romantic Suspense, Returning to Eden, by Rebecca Hartt

-- Present Day, Virginia Beach, Virginia --

A dead man stands at Eden Mills' door.

Declared MIA a year prior, the Navy wrote him off as dead. Now, Eden's husband, Navy SEAL Jonah Mills has returned after three years to disrupt her tranquility. Diagnosed with PTSD and amnesia, he has no recollection of their marriage or their fourteen-year-old step-daughter. Still, Eden accepts her obligation to nurse Jonah back to health while secretly longing to regain her freedom, despite the…


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