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Xenophage

It’s silent. It’s invisible. It’s smaller than a bacterium. Yet it could be the end of all life.
And it’s not from around here…

When an asteroid crashes into the Alaskan wilderness, it brings with it a pathogen more deadly than anything ever seen before.

A group of scientists becomes the last line of defense between the organism and life on Earth.

Containment becomes a race against time, because if the Xenophage spreads, there won’t be anyone left to tell the tale.

375 pages, Kindle Edition

Published December 27, 2025

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About the author

T.S. Falk

30 books102 followers
T.S. Falk is a lifelong adventure enthusiast and when a certain pandemic hit, he started writing the books he would like to read.

THE AUTHOR HAS NO SOCIAL MEDIA PROFILES AND ALL PROFILES OUT THERE ARE FAKE AND NOT CONNECTED TO THE AUTHOR AT ALL! HE DOES NOT HAVE A WEBSITE!

If you want to reach him, you find an e-mail address to do so at the end of each book!

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Community Reviews

5 stars
538 (59%)
4 stars
286 (31%)
3 stars
66 (7%)
2 stars
13 (1%)
1 star
4 (<1%)
Displaying 1 - 30 of 46 reviews
Profile Image for ♡ retrovvitches ♡.
995 reviews64 followers
July 5, 2026
i really enjoyed this one, has genuinely one of the most infuriating villains ever, and mixed with an alien super virus that kills everything and anything, just genuinely a great story. one mf pissed me off so bad. i was sorta emotional about the characters, i even cried once!! just a good read
347 reviews
April 17, 2026
There aren't enough stars for this adventure!

I got from terror to fear, and from fear to tears. Also, from love to the protagonist to hate for the treasonous second personage.
What I didn't like completely was the final scene.
I would like to make to smithereens the pseudo scientific private company which took the batton of the project to battle the xenophage using the know how of the previous scientists reduced to the protagonist and the only person who was resistant to the would-be extra terrestrial virus.
All in all, thank you Mr. Falk.
Profile Image for Matt Egan.
869 reviews24 followers
January 1, 2026
Absolutely phenomenal!

Xenophage is an excellent sci-fi thriller about a microorganism, not from earth, that causes an uncontrollable outbreak in rural Alaska. The book is simply exceptional. The writing is first class, with great narrative quality, great characters, a great plot, great dialogue and an outstanding plot. 5/5 stars, highly recommended for any fans of sci-fi thrillers and thrillers in general!
Profile Image for Michael.
55 reviews35 followers
August 13, 2026
I’m rounding up in the official stars because there’s no reason to round down and I’m feeling like 4.5 is probably where I land. This is the 3rd book I’ve read in the last few months where something biologically unique—and very deadly—is taking place in the arctic. But that’s about the extent of their similarities. This was the least graphic in terms of bloodshed description, if that matters to you.

Nothing concrete to really criticize here, but it didn’t blow me away the way a typical 5 does. Absolutely would have no problem recommending this or reading other books by the same author.

I thought the design of the xenophage (its source, its biology, its weakness, etc) was well done. Outside of the science (which is present but in no way too technical), it’s a thriller split between the story of what’s going on in the lab and what’s going on in the field. Humanity at its best and worst.
808 reviews15 followers
August 27, 2026
A SIMPLE MAN'S REVIEW:

I'm don't mind reading an awful book if there is a fun or interesting idea within it, but when it's basically a hodgepodge of tired tropes and cliches? Give me my time back!

The story was made up of exactly the characters you'd expect doing exactly the things you'd expect them to do. The women were basically flirting or falling for the men, while those men were heroically or tragically moving the story along. The female nurse protagonist managed to flirt and develop feeling for two different men, all while trying to survive and watch her whole town die around her.

I'm sure the author wrote this book, but it's also exactly what you'd expect AI to churn out after reading all the other books in this genre. Nothing new, nothing interesting. Just plug-and-play plot with ready-built characters.

Skip it!
Profile Image for Andie Meddaugh.
25 reviews
June 7, 2026
Overall, thrilling read, emotionally compelling. I really liked how the reader was given not just the research team point of view, but also clinical from ground zero, so to speak. I do have a few minor nitpicks, though. First, timeline wasn’t very clear. The pathogen took out the town in days, but work on the pathogen at the military site took weeks. Since we jumped perspectives frequently, it was hard to gauge a timeline. Second, the ending was a bit of a downer. It’s disappointing that Helix hardly paid for their crimes at all, but I suppose that is fairly true to life, isn’t it?

The not so subtle nod to the Andromeda Strain’s base of operations at the end was a satisfying Easter egg.
This entire review has been hidden because of spoilers.
62 reviews
February 13, 2026
wasted opportunity for a goof novel

This could have been a great novel if it stayed true to it's original premise, an alien pathogen hitting earth. So many complex,interesting plot lines could have kept us on edge of our seats. Instead author switched to lame roll your eyes nonsense trying to bring in "action". The Roman character and subplots were just awful and roll your eyes to the max come on man - can everyone be so dumb. Waste of a good concept with silly plots. Second half one star.
73 reviews1 follower
April 30, 2026
Not a bad book, the story is a bit similar to the Andromeda Strain by Michael Crichton but for a less mature audience, this reads like a teenager book.
By the end, I was rooting for the bad guy as the rest were just a bunch of goodie two shoe.
The science in the book is laughable, but I do not see it as a deal breaker, the tension and group dynamics are what holds the story together.

Profile Image for Greg.
75 reviews2 followers
March 3, 2026
Shades of the Andromeda Strain

This is a very plausible story of a "virus" that is brought to earth by a meteor. The character development is solid and the story moves at a very good pace. The questions of an intelligence within and behind the virus was a very interesting. This was good read. I will be looking for more works by the author.
This did hit many of themes from the Andromeda Strain
1 review
May 8, 2026
Best sci-fi book, or any genre of book, I've read in quite awhile. Nice flow and truly impressive scientific detail that must have required a lot of research to make it as believable as possible. A little too much science-speak around the midway point of the book but overall a great read that I had a hard time putting down. First time I've read anything by Falk but I plan to seek out more of his books.
4 reviews
June 7, 2026
Well worth a read

Enjoyed Neo Genesis so much that I had to read Xenophage. Really enjoyed both. The suspense kept me up until the early hours. I liked the characters and the premise of the book. Frightening really. The only thing that detracted from a 5 was the poor editing in parts. The book was well written but bad editing can be annoying. I will try some more of the authors books though.
3 reviews
July 26, 2026
A thriller in a sci-fi disguise. Author took a good idea, borrowed from M. Crichton's Andromeda Strain, then buried it under a story of a single person's sociopathy. If you're here for sci, or for world building - an essence of sci-fi, or for engaging (means - not predictable) plot, or well written characters, you'll be a bit disappointed. Nice for sci-fi newbies, but hardcore, seasoned genre fans will found little to no novelty.
1 review
August 6, 2026
Different approach to end of the world. Mostly excellent science.

Only detail that is irritating is calling a shield a visor. Two different things. A shield can seal a suit and allow one to see while a visor extends forward for reflection or shade such as a sun visor in your automobile. A baseball cap has a visor. Huge difference and a little sloppy like the commentators at a car race.
61 reviews3 followers
January 31, 2026
Enjoyed!!

I’ve only dabbled in T.S. Falk but this was enjoyable and kept me enthralled until I finished. The summary pretty much tells you about the book. This was a nice change from my usual fare. Sorry, but there a few typos (Diame instead of Diane) but not overly glaring enough to take you out of the scene (as many can). I’ll definitely be looking into more Falk fiction.
41 reviews
March 23, 2026
Very Good Read

Great stand alone novel. Well written, with a well developed story. Only a few times did I feel it fell off, which frankly is a rarity. For a stand alone, the character development was outstanding. Additionally the story reads quickly and you feel a need to find out what happens next.
92 reviews
April 5, 2026
I enjoyed this so much i immediately checked for a sequel when I had finished it. too bad there isn't I would have immediately bought it and contine reading.
there were a couple sentences that were very awkward but nothing that ruined the book. Great characters that felt quite realistic. if you enjoyed the Andromeda Strain you will most definitely enjoy this one.
322 reviews3 followers
April 26, 2026
Horrifying Possibility

For the dilemma of this book posits Has horrifying ramifications. It is unlikely, but it could possibly happen, or at least something like this. We would hope that people would act in good faith in such a case, but we never know what a person's going to do under pressure. There Is a long history of people being traitors.
61 reviews2 followers
May 1, 2026
a decent, fast paced book, but with serious detail flaws

Let me get this out right away - how did the nerve gas/toxin only affect one person? I had a hard time getting past that point. Also, TS Falk, do your research about ranks in the military…an embarrassing gaff. Overall a decent book…but poorly executed.
Profile Image for Terry and dog.
1,034 reviews34 followers
January 12, 2026
A sci fi, medical, thriller with some terrific characters, a lot of anxiety, science, virus- bug-organism thing and some hateful bad guys. Everything you need in a story to draw you in and keep you plastered to your seat until the end.
Very satisfying read.
22 reviews1 follower
January 24, 2026
Andromeda Strain 2025

Well worth reading. A fun ride. And yes people are that good and that evil.

Two tiny niggles. Americans don’t have flats. They have apartments.
Army Ranks easy to look up. Don’t have Lt Commanders. That’s
a Navy tank. Easy to fix these mistakes.
52 reviews
March 4, 2026
Great write and a better read.

If you're a sci-fi enthusiastic this books for you. Captured me from page one. Hard to put down. Great scientific reference, storyline and outcome. A must read you won't regret.
5 reviews2 followers
March 11, 2026
He got.the science right

As a scientist myself, I tend to either be amused or frustrated when the science is wrong. The science is spot on! And the story line is stay up late to finish. A great read!
5 reviews
March 29, 2026
One of the best sci-fi novels I have read in a long time

I loved this kindle book. It was very interesting and very easy to follow the characters. I highly recommend it to sci-fi lovers.
18 reviews
April 30, 2026


Excellent start and character interactions but as it progressed I couldn't help but think of scenes from various Crichton movies as well as a plot device from Pandorum.
Still, worth a quick read with an ever narrowing squint as you go.
Profile Image for Patrick.
1,020 reviews7 followers
May 2, 2026
xenophage

This is a very interesting story that has some rather intriguing ideas. Imagine what a deadly organism from beyond the solar system would be like and what havoc it could cause.
Profile Image for Chuck Woodbury.
408 reviews
June 14, 2026
Wow

Great read from TSFalk. Similar to andromeda strain but with much higher stakes and more modern portrayals. Thrilling and tense as a down on his luck xenobiologist is co opted by the military to investigate a meteorite born pathogen that is deadly to all life.
2 reviews
June 19, 2026
Excellent read

After the first couple of pages I was absolutely hooked. It kept me guessing, going in directions that I didn't expect. The only thing that would make it better would be "book 2" !
10 reviews
September 2, 2026
I did not know what to expect

I definitely enjoyed this sci fi read and the way they got to why it possibly existed. It's dark and quick with some sad moments but overall I'm glad I read it. I recommend it if you like sci fi thriller and horror
8 reviews
September 16, 2026
Great book for what it is

A little heavy handed in the lab terminology, and I found myself skipping quite a bit of that. Regardless-it’s a good book worthy of late night reading if you like the premise.

Great characters and well done.
780 reviews4 followers
January 12, 2026
xenophage

I gave it five stars for how well it was written. If it’s not the type of book I generally like.
Displaying 1 - 30 of 46 reviews