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A code hidden in the human genome will reveal the ultimate secret of human existence. And could hold humanity's only hope of survival.

Genome concludes The Extinction Files, the two-book series that began with Pandemic.

In 2003, the first human genome was sequenced. It was a breakthrough of historic proportions, but only one scientist knows the full truth of what lies buried in our DNA. That secret will change everything we thought we knew about our past. And our future.

Dr. Paul Kraus has spent his career searching for what he calls humanity's lost tribes--human ancestors who have gone extinct. When Kraus compares the DNA samples of the lost tribes with our own, he discovers a pattern of changes. A code. He believes he knows what the code is, but the technology doesn't exist to fully decode it. To protect the secret, Kraus hides his work and disappears.

For years, the secret remains buried. When Kraus dies mysteriously, his work is lost forever. Now the technology exists to finally unravel the code buried in the human genome. The race to find Kraus's research has begun, and one group will do anything to find it.

Dr. Peyton Shaw and her mother have obtained part of Kraus's research--and a cryptic message that could lead to the remaining pieces. They soon learn that finding those pieces may be more dangerous than anyone imagined. But there's no choice. His work is the key to stopping a global conspiracy--and an event that will change humanity forever. The ultimate secret, buried in the human genome, will change our very understanding of what it means to be human. For Peyton, finding it may come at an incredible price. She must weigh the lives of strangers against those she loves: Desmond Hughes and her mother. With time running out, Peyton makes a fateful choice--one that can never be undone.

544 pages, Kindle Edition

First published October 12, 2017

7070 people are currently reading
7859 people want to read

About the author

A.G. Riddle

22 books5,751 followers
A.G. Riddle spent ten years starting internet companies before retiring to pursue his true passion: writing fiction.

His debut novel, The Atlantis Gene, is the first book in The Origin Mystery, the trilogy that has sold a million copies in the US, is being translated into 19 languages, and is in development at CBS Films to be a major motion picture. The trilogy will be in bookstores (in hardcover and paperback) around the world in 2015.

His recently released fourth novel, Departure, follows the survivors of a flight that takes off in 2014 and crash-lands in a changed world. The hardcover will be published by HarperCollins in the fall of 2015, and 20th Century Fox is developing the novel for a feature film.

Riddle grew up in a small town in the US (Boiling Springs, North Carolina) and graduated from UNC-Chapel Hill. During his sophomore year of college, he started his first company with a childhood friend. He currently lives in Florida with his wife, who endures his various idiosyncrasies in return for being the first to read his new novels.

No matter where he is, or what's going on, he tries his best to set aside time every day to answer emails and messages from readers. You can reach him at: ag@agriddle.com


** For a sneak peek at new novels, free stories, and more, join the email list at:
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5 stars
7,628 (43%)
4 stars
6,433 (36%)
3 stars
2,804 (15%)
2 stars
587 (3%)
1 star
176 (<1%)
Displaying 1 - 30 of 796 reviews
Profile Image for Anne Thomas.
2 reviews20 followers
September 13, 2018
A really good read, but the ending felt like the author just woke up one morning and realized "Oh my God, today's my deadline! Okay, just write an ending quickly and send the book to the editor." It didn't come naturally. Anyway, other than that it was an interesting read, it definitely makes you think about stuff, about our world and our society. The pacing is quick, the science interesting and not difficult to understand, and it's also packed with action. I wish that ending had been different though...
Profile Image for donna backshall.
829 reviews234 followers
April 22, 2021
There were so many big ideas wrapped in this sci-fi adventure, I honestly couldn't keep up! This was a buddy read, and I kept going back to my buddy saying "I surely missed something here" or "what did Riddle mean with this?", because it was complex in unexpected ways. It's not often a book talks up to me, rather than spelling out every little detail and "hint", but I was glad for the mental challenge.
Profile Image for Deb.
462 reviews125 followers
November 17, 2021
The scientific jargon is too well pronounced which made me feel like I was trudging through this read. The action kept me involved in continuing until the end along with the mystery of how many factions were involved and their agendas. Another thought provoking book by A.G. Riddle.
Profile Image for Tom W.
4 reviews
October 17, 2017
Decent conclusion to the series, but after 1 and 3/4 build up about the Looking Glass, the reveal as to what it actually was capable of was quite disappointing.

The entire ending also seemed abrupt and penned by an author who realized that the book was ending.

Profile Image for Jerry Mount.
218 reviews2 followers
October 28, 2017
I’m a little conflicted about this book. I enjoyed Pandemic a lot, and was anxious to read the sequel. Overall, I liked the book, but something felt off. The author has stated that he originally planned a trilogy, but later changed to a two book series. Maybe there was not a natural break point to transition to a 3rd book. It seemed to me that there was too much material in Genome. A world-wide chase and battle story, a double time-line, a great reveal, a series wrap-up. Most of the story revolves around 7 key characters and their real loyalties and motivations and trustworthiness.

For me, the weakest part of the story is the central plot line. The concept of universe expansion cycles and evolutionary jumps is not well explained at all. Somehow, we are inevitably destined for a Matrix-type alternate? How do we know there have been past cycles and will be future cycles? I was disturbed that there was no substantial discussion of the obvious risks of a society controlled by the Citium. The book seemed to show that the only problem is if the Citium was ruled by “bad guys”. No mention of any problem with an elitist intellectual group who “knows best” controlling governments and people. As if elite intellectuals are immune from the corruption of power. History teaches us otherwise. This should have been mentioned and discussed somewhere.
This entire review has been hidden because of spoilers.
Profile Image for Jennifer.
4 reviews46 followers
August 31, 2018
Definitely qualifes as a "page turner" but I am a little disappointed how this series ended. I felt the epilogue was rushed and gave it 4 out of 5 stars because of this. But still, I think it's a very satisfying read, it's also smart and makes you think... like it kept me thinking about how prepared we are for the next epidemic and how much technology is humanizing or dehumanizing our society. Enjoy.
13 reviews
March 31, 2021
This started off well but then it kind of went downhill. It's quite long, but most of it is just repetition with various people chasing each other around the globe, and explaining things to each other so cryptically that they're not actually saying anything at all. I didn't particularly care for any of the characters, except maybe Avery.

And then we have the Looking Glass.

And then there's the Rabbit Hole!

I gave this two stars because it was exciting at times and there was some fun science stuff in between all the mysterious drivel. I really wanted to see where it was all going but in the end nothing made any sense to me.
Profile Image for Annie Kostyk.
439 reviews13 followers
January 22, 2018
I've read all of Riddle's novels thus far and loved them. Polished each of them off in a day.

This one though, it took a week. I couldn't get through it. I know these are self-published, but I felt he need some help on this one. It seemed like I was reading a first draft of a book. It was all over the place. Back and forth between past and future in the same chapter. A lot could have been edited out (easily 100 pages) and added to the last book to simply make one long novel. I felt the ending was jammed together to get it finished on a deadline with no clear idea.

Very disappointed in the story line. The last book was clear, concise and on a mission. From my college microbiology class, the basics of a genome is the genetic material of an organism. The end of the story didn't tie it up with the genome. It was a computer based program that turned into an app from people's minds? People have been researching the evolution of man for this? This part of the story severely needed more time. I understand what he was trying to convey, but it wasn't there for me. Not at all. Wasted a week. Won't be reading any future work unless someone gives it to me.
Profile Image for Jess.
576 reviews9 followers
March 11, 2020
3.5ish stars? The whole book can be summed up as follows:

“Will you tell us what the Looking Glass is?”
“We simply don’t have time. It’ll change humanity!”
“Yes but can we just make some time right now? Give me a lil hint.”
“You’re asking the wrong question, and we don’t have time, and it’s simply too grand to explain.”
“Okay I really want to know though.”
“Yes yes, in time. At the very end. Oh and it’s probably basically totally the same thing as it was in the other series I wrote.”

BOY BYE.
Profile Image for Said AlMaskery.
319 reviews65 followers
February 10, 2018
I really enjoyed the science fiction, very imaginative!

This was much better than the first book in the series. I really enjoyed it.
72 reviews4 followers
November 6, 2017
This book is full of intrigue, mystery and deep philosophical theories, religious beliefs merged with science.

Lots of secret society groups, spy, love triangle, adventure and honestly confusing dialogue. I enjoyed this at times, others I really had to force my self to read because of all the waiting , some of the action and fighting was confusing , but I admit I can't visualize technical descriptions of some of equipment, subs and stuff. The overall story was Interesting, and I kept reading to get to the end, the mysterious code explained and revealed. At the completion , of this book I'm confused and don't understand the ending . Physical reality, looking glass is the next leap for humans, alternative reality but aware of the physical one. Mysterious guide recommends naming the highest mountain peak different from the physical realm so that when in the looking glass reality your aware that it's the newly discovered reality plane. Only it's named the same . Physical reality, Mount Rushmore, looking glass reality it's named, Mount Rushmore. I'm so confused and don't understand the ending at all.
Profile Image for Marianne.
120 reviews10 followers
May 14, 2019
Only 3 stars for me, although I do think it was quite a fitting end to the story. There were big parts of the book that dealt with the memories of Desmond and it all got repetitive and way too wordy. Just a lot of unnecessary details and it just bored me somewhat. What A.G Riddle does best is action and when the story stays in the present it's easy to get swept away in it as it just flows so well. Unfortunately a big part of the first half of the book at least were just Desmond recovering his memories and they were all a bit too long and too detailed and the fact that Desmond was just out of action while this was going on was annoying to me. I quite liked the theories about life and our planet and the little twists in the story though and I really do love the way A.G Riddle writes. If it hadn't been for the lull of all those memories I would have given it a four for sure.
Profile Image for Susan.
359 reviews32 followers
June 15, 2020
I read “Pandemic” and “Genome”over a long weekend. Felt like myself again reading pretty much every chance I could. I hope this has broken my awful inability to read a book since the coronavirus news began. I can’t believe it’s mid June and I’ve only read about five books this year. Seems impossible, but no more impossible than the fact of this worldwide epidemic, crazy leaders in our government, protests in the streets every weekend, unemployment at record levels, murder hornets and killer toads...

Anyway, this two-book series was just what I needed. Sort of scary like what’s happening in 5he world right now, but far out enough to be distracting and not “feel” real. Hard to explain. I just really found both these books to be great page turners. Really enjoyed both of them.
Profile Image for Teresa.
1,900 reviews33 followers
May 17, 2020
A long drawn out science story the screws up at the end snd goes stupid, forgetting what a genome actually is. He spent a ling time writing all this then it looks like he couldn’t figure out how to end it, so chose something stupid. An APP?
10 reviews
January 3, 2018
I will tell you about the looking glass. Never.

The following is my honest review of this book and may contain minor spoilers.
The premise of this book (and the former) is really good and provides a fresh plot. I like Riddle's writing in general. However...
It felt like the writer was trying to over explain and over rationalize every detail. While I do appreciate the mostly accurate science, it felt at many spots the story was dragging too much.
I also felt, given the size of each book that the ending was a bit rushed. So much time was spent setting up the background story that by the time the writer actually "tries" to explain what the looking glass is, he's doing so very quickly that it is not satisfying to me as a reader.
I also, personally didn't buy into the notion that we, humans, can upload ourselves (mind soul and all) into a virtual world.
Profile Image for Mari.
1,529 reviews10 followers
April 14, 2019
3.25 - 3.5 ⭐

I did a quick re-read / listen of Pandemic (The Extinction Files #1) by A.G. Riddle then moved on the audio book of Genome (The Extinction Files #2) by A.G. Riddle . It wasn't a bad story and the narration is excellent. I did get a bit frustrated that the plot was more like a video game. Complete a task and get a prize. In this case the prize was a small nugget of info that amounted to nothing more than another clue. I was hoping for more depth to The Looking Glass instead of another book where the characters criss-cross the globe following cryptic clues while narrowly escaping disaster. The end was anti-climatic and it was almost a relief to be finished with the story.
Profile Image for Mayra.
235 reviews2 followers
January 15, 2019
This was an entertaining story, it keeps you hooked even with all the frustration that comes with not getting any answers.

However, If you are waiting for a massive discovery for the grand finale, you will be dissapointed.
194 reviews2 followers
April 7, 2019
All I can say is WOW! What a ride! The action never stops and the questions keep coming, right up to the very last page. Well written, full of science that seems like its just around the corner.
Profile Image for Ola Janik.
4 reviews1 follower
February 4, 2020
I want to know why every 'good" guy in this series, no matter how smart they are, are f###*in stupid.
1. A whole world of special agents have not been able to track down the 2 villians but the FBI type director is going to take them with one other (wounded) agent.
2. Major crisis, but the 2 heros take a minute to discuss their relationship, "after all this is over we will take a vacation" Ummm, the world has ended but sure, I'm sure Disney world will open just for you.
3. Heros on an 8 hour airplane ride but "there is no time to explain the looking Glass right now"
4. The main character is a genius but doesn't realize AT ALL that his partner is evil AF and wants to take over the world. "But he said it was for the good of mankind..."
He also thinks that Yuri can "fix" him so drumroll please: he can be with the love of his life, and learn how to "love her like she loves him"
Of all the bullshit. That's not even the worst part of the book. There are soooo many things that don't add up. Why do people who have armys fighting for them go to the site themselves? Especially when they are 80 years old. Yuri is 5 when Stalingrad is invaded 1943 so he was born on 1938. 2018-1938=80 same with Lynn Shaw, she is running and beating up soldiers, also 80 years old. Ok. Ugh, thank the reading gods I didn't pay for this book
This entire review has been hidden because of spoilers.
Profile Image for Rishabh Natarajan.
8 reviews
March 27, 2018
Good

The book is about an existential topic that is quite widely tackled in some TV shows and movies. The pacing was quick but the ending was somewhat abrupt.

Like other AG Riddle series, this Genome series also moves fast and the scope of the books expands very rapidly, sometimes leaving the reader wondering where he/she is being led and what the true intention of the material is.

All-in-all a good read but could've been treated with a little more care.
Profile Image for Christine Bishop.
523 reviews
March 24, 2020
A great book!!

Genome is the second and final book in The Extinction Files. The book begins with Desmond waking up and realizing that Connor and Yuri have captured him again and that escape seems unlikely. Peyton and her mother Lin are in the Arctic recovering the lost information from the Beagle.
Like all of A. G. Riddle’s book, Genome is filled wonderful character development, great world building, and an amazing storyline. Great job Mr. Riddle!!
Profile Image for Larry.
476 reviews2 followers
May 20, 2018
A very thought provoking, fast paced science fiction thriller dealing with the history of mankind, human genome and a global conspiracy. At times the story got confusing as it switched between different characters and timelines, in addition to the science fiction that for me was a lot to fully comprehend.
Profile Image for Jackie.
341 reviews34 followers
July 25, 2018
Thought provoking end to the Extinction files series. Wow! What an amazing author and books. Can't wait to read more books by this intelligent, creative, though provoking author.
Profile Image for Heather.
88 reviews3 followers
January 22, 2025
That last line got an audible "Oh sh*t" from me. Why are there not more people talking about this author??!
Profile Image for Samyann.
Author 1 book84 followers
September 11, 2018
This review addresses the series, The Extinction Files, which at this writing consists of two, full-length, novels. Briefly, Pandemic is … well … just that. A worldwide breakout of a global pandemic begins with an outbreak in Kenya. Daily, we go from hundreds, to thousands, to millions, to billions of people either infected or dead. Book 2, Genome, involves the same bunch of bad guys who will pull the trigger releasing deadly nanos in the bloodstreams of everyone vaccinated from the original pandemic if the bad guys don’t get what they want … no spoilers. The nanos cause immediate brain hemorrhaging and a quick death. The audiobook versions of The Extinction Files are both narrated by Edoardo Ballerini. Pandemic is nineteen hours and Genome is thirteen hours of listening. Released by Audible Studios.

Liked. Always in for a good apocalyptic story. Narration is good, no issues, production is fine. No offensive language, no explicit sex scenes that are not “fade-to-black”.

Didn’t like. There are way too many side stories that are not relevant to the story. Fillers galore, including superfluous characters with no value. Some familial coincidences are not believable. A bit of re-wind hell, which is frequent if your mind wanders .. usually when trying to think your way through something you just heard muttering, “Nah ….”

Okay if you’re into stretching imagination as taught as a mosquito’s ass over a rain barrel. Not great literature by any means, but enjoyable listens, albeit eye-rolling at times.
Profile Image for K..
4,726 reviews1,136 followers
July 5, 2018
Trigger warnings: violence, gun violence, death of a loved one, fire (in the past), serious physical injury. Probably other stuff too, but I read most of this on a 10.25pm flight from Krakow to London/on a 12.30am bus from Stanstead to King's Cross/in bed at 2.45am because I ONLY HAVE 20 MINUTES LEFT DAMMIT, so it's entirely possible that I missed stuff...

So here's the thing: I enjoyed Pandemic. But I also had very little desire to actually pick up this book. But then it was a Kindle deal of the day or a monthly deal or something and it was less than $2, so I figured I may as well read it.

This was...it was fine? But I also basically didn't care about anything that happened in it. I was HOOKED on all the medical stuff in the first one, but all the secret conspiracy stuff here was just sort of...eh. I wasn't particularly attached to any of the characters, so I didn't care what happened to them. I missed the all-over-the-world adventure aspect of the previous book. Like, this one kind of still had that. But mostly, it was just flying all over the US, and zzzzzzzzzz.

So yeah. Now I kind of wish I'd saved my $2. I guess at least it kept me occupied on that plane/bus trip??
Profile Image for Wendy.
2,371 reviews45 followers
February 10, 2019
The thrilling conclusion to the “Extinction Files”, “Genome” blends a global conspiracy, history of mankind and the human genetic code into a fast-paced and action-packed plot that opens with the capture of Desmond Hughes and Connor McLain’s struggle to resurrect his brother’s memory to find the last piece to the Looking Glass as well as Peyton and Lim Shaw’s search for the mysterious code buried in the humane genome that began with Dr. Paul Kraus’s research.

With twists and turns as civilization begins to erode after the pandemic Peyton and her mother fight to escape not only “the Beagle” after an attack on the Arktika, but Yuri and his forces when they discover Dr. Kraus’s hidden research. Similarly, Desmond Hughes who has no recall of his work on “Rendition” is pushed by his brother into remembering the past while Connor and his men dodge the forces that want to render Yuri Pachenko and the Looking Glass harmless. In this complex and multilayered story that explores mankind’s next evolutionary step the intensity and suspense continually escalate as the story flows to an interesting climax.

I liked “Genome” a science-fiction mystery that kept me riveted until the end.
Profile Image for Florina.
28 reviews11 followers
May 3, 2019
First time reading this author but it won’t be the last. Genome is not a standalone novel, this is the second book of the Extinction File series, the first one being Pandemic. I recommend the series, though I was a bit disappointed about the Looking Glass concept. Unfortunately, in this last book the descriptions and passages regarding genetics/evolution are scarce, although the scientific part of the novel is accurate and well documented. In the end I can say that it was a fun read and exciting.
Profile Image for Lexie.
3 reviews
November 18, 2018
Enjoyed this book as well as pandemic. I love Riddle’s writing and previous works! Only reason that I’m giving this 4 stars is because the very ending confused me. I wasn’t sure what was going on once Lin entered the rabbit hole. If anyone could further explain what the dialogue between her and the library dude was about, that’d be helpful.
This entire review has been hidden because of spoilers.
152 reviews2 followers
May 3, 2019
Wow!

My mind is a bit blown. I usually get lost in the technical verbiage of books like this one but this book is almost entirely about math and science and coding without being beyond my understanding. The idea for this book was beyond where my thoughts would ever take me but I truly enjoyed the ride
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