R.D. BRADY, Thriller Author
Unearthing History, Igniting Thrills
Unravel the Ancestral Code of Humanity​​
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More than twenty hominid species once walked the Earth. For most of human history, Homo sapiens were not alone.Now they are the only ones left.Or are they?
The Ancestral Code Series by R.D. Brady blends gripping science thriller suspense with genetic conspiracy, hidden hominid species, cryptozoology, and nonstop action. Beginning with Hominid, continuing in Genus, and expanding in Modify, this pulse-pounding series explores the terrifying possibility that humanity’s evolutionary story is far from complete.
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Perfect for fans of the scientific suspense of Michael Crichton and Andy Weir, the high-stakes adventure of James Rollins and A.G. Riddle, and the fast-paced action of James Patterson.
“Fast paced and action packed science”
“Reading this book is like following a movie.”
“The world building was so well done and the characters are very believable.”
Frequently Asked Questions
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• What is The Ancestral Code Series about?
The Ancestral Code Series is a science thriller and genetic conspiracy series that explores one terrifying question: What if humanity was never alone? Combining hidden hominid species, cryptozoology, evolution, genetics, and high-stakes action, the series follows Dr. Tess Brannick as she uncovers secrets that could rewrite everything we know about human history.
• What books are in The Ancestral Code Series?
The series currently includes:
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Hominid (Book 1)
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Genus (Book 2)
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Modify (Book 3 – available for pre-order)
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• Do I need to read the books in order?
Yes. While each novel contains its own major conflict, the series follows an ongoing story arc involving hidden hominid species, genetic discoveries, and escalating global threats. Reading in order provides the best experience.
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• What genre is The Ancestral Code Series?
The series blends:
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Science Thriller
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Genetic Thriller
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Cryptozoology Thriller
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Action Adventure
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Techno Thriller
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Evolutionary Suspense
It combines scientific theories with fast-paced suspense and cinematic action.
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• Is the science in the books real?
Many of the scientific concepts, historical references, and evolutionary theories discussed in the series are based on real research. Topics such as Homo denisova, EPAS1 genetics, DUF1220 brain development research, and undiscovered hominid theories are grounded in actual scientific discussions and discoveries. ​
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• Is Hominid about Bigfoot?
Partially—but not in the traditional sense. Hominid approaches the Bigfoot legend through the lens of anthropology, genetics, and evolutionary science, exploring the possibility that legendary creatures may actually be surviving branches of humanity.
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• Who is the main character in the series?
The series centers on Dr. Tess Brannick, a scientist and researcher whose search for the truth about hidden hominid species pulls her into dangerous conspiracies, genetic secrets, and conflicts that threaten humanity itself.
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• Are the books more science-focused or action-focused?
Both. The Ancestral Code Series combines scientific mystery and speculative evolution with survival suspense, covert operations, and nonstop action. Fans of Michael Crichton, James Rollins, A.G. Riddle, and Andy Weir will feel right at home.
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• Is The Ancestral Code Series appropriate for fans of Jurassic Park or The X-Files?
Absolutely. Readers who enjoy hidden species, scientific discoveries, government secrets, evolutionary mysteries, and high-stakes thrillers will likely enjoy the series.​
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• What makes The Ancestral Code Series unique?
Unlike traditional monster thrillers, the series treats cryptids and hidden species through a realistic scientific framework. The books explore the unsettling possibility that humanity’s evolutionary story is incomplete—and that other branches of human evolution may still exist.
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• Is Modify the final book in the series?
No. Modify continues the expanding story of The Ancestral Code universe, with larger conspiracies, genetic manipulation, and crossover elements that broaden the scope of the series.
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• Who would enjoy this series?
The Ancestral Code Series is perfect for readers who love:
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Science-based thrillers
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Hidden civilization mysteries
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Evolutionary conspiracy stories
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Genetic engineering suspense
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Cryptid and Bigfoot mythology
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Fast-paced action adventures
Fans of Michael Crichton, James Rollins, Douglas Preston & Lincoln Child, Blake Crouch, and A.G. Riddle should feel right at home.
The Complete Ancestral Code Series
A legendary creature is about to be discovered . . .
Best Selling Author R.D. Brady offers a standalone novel that answers the question all of us have secretly asked: what would happen if bigfoot was discovered?
For centuries, legends of a giant hairy beast roaming the Pacific Northwest have made their way into the collective understanding. Despite the reports, conclusive proof of bigfoot has never been found.
With advanced degrees in Anatomy and Physiology as well as a deep understanding of the forest, Dr. Tess Brannick has a plan to change all that. And a year into her research in northern California, she is on the precipice of a world-shattering discovery. But the closer she gets to her goal, the more concerned she becomes. Not with the subject, but with the man backing her research - Carter Hayes.
Hayes is a CEO renowned and loathed in equal parts. He has been obsessed with bigfoot since he was a child. And now he sees a chance to create a legacy that will place his name in the annals of history.
All great discoveries, though, come with a cost. And Tess knows she won't be the only one to pay this one. But Hayes isn't concerned with the cost. He will achieve his goal, and he won't let anyone stand in his way.
Especially not Tess.
Evolution—rewritten.
When a prominent eco-activist turns up dead in Portland, FBI agent Mandy Brannick is assigned to the case. What she uncovers isn't just a murder—it's a message. And a whisper of something impossible buried in the evidence.
With the help of a reclusive geneticist and a survivor who’s next on the list, Mandy is pulled into a hidden world of black-budget labs, corporate sabotage, and accelerated evolution.
As the body count rises, Mandy must confront the unthinkable: this isn’t about the past. It’s about what comes next.
Book Description Coming Soon
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Pre-Order Available
“I've been reading other authors, which have been okay, but nothing satisfies like an RD Brady book!”