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XENOPHAGE: A SciFi Adventure

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For fans of Michael Crichton and James Rollins.

From the author of NEOGENESIS and the acclaimed The Ancient Secrets series comes a new science-fiction adventure.

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.

Don’t miss the new stand-alone sci-fi thriller by T.S. Falk.

375 pages, Kindle Edition

Published December 27, 2025

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About the author

T.S. Falk

28 books97 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
366 (59%)
4 stars
197 (31%)
3 stars
44 (7%)
2 stars
7 (1%)
1 star
2 (<1%)
Displaying 1 - 30 of 32 reviews
59 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.
335 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.
71 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 Matt Egan.
755 reviews18 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 Greg.
71 reviews1 follower
March 4, 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.
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.
38 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.
88 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.
313 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.
58 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.
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1,030 reviews33 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.
45 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.
961 reviews7 followers
May 3, 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.
779 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.
9 reviews
January 14, 2026
Enjoyable read!

I found the topic interesting and the writer very knowledgeable. This book is well written and it held my attention thru the ending.
5 reviews
January 23, 2026
the bad guys win?!?!?!

Besides the fumbling plot, the ending is just awful… Boo!!! This is the last Falk book I read. The End
3 reviews
February 5, 2026
riveting

The story was very engrossing. I finished it in a day and it seemed very realistic. I almost didn’t want it to end.
7 reviews
February 5, 2026
Excellent book by T. S. Falk! Intriguing, fast paced, great characters, wonderful plot! Love his books!
4 reviews
February 22, 2026
This was so good I didn’t want it to end! This book is a great read beginning to end!
Profile Image for Brooke.
81 reviews
March 2, 2026
People’s greed always sets the world up for failure and death.
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28 reviews
March 13, 2026
Excellent read

Thoroughly enjoyed this book. I read a book a week and this one stands out! You won’t be disappointed. Thanks T.S
7 reviews
April 14, 2026
stellar

Loved this book. Good science, complex plot, interesting characters, believable. Nice ending. I read a book a week, and this stands out to me…I’ll remember it.
10 reviews
April 15, 2026
Amazing book!

This book kept me on the edge of my seat during the entire read. If you're a sci-fi and/or medical thriller fan this is the book for you.
30 reviews
April 28, 2026
loved this Book

This Book was exciting and it flowed well. One of T.S. Falks better writings. Looking for the next book now.
Displaying 1 - 30 of 32 reviews