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ISLAND X: A Genetics Investigation Team Thriller

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GENIT was created to stop monsters. Now the monsters are being used to stop them.

After the abduction of one of their own, the shattered remains of GENIT launch a desperate rescue mission to ISLAND X, a dumping ground for experimental creatures and black-budget nightmares. But this time they’re not just facing teeth and claws. They’re being hunted by enemies—old and new—and by a government that will kill to protect its secrets.

A team abandoned. A partner taken. An island that should have been shut down years ago. And a new apex predator that won’t let them leave.

One last mission. One final shot.

If you enjoy books like "Jurassic Park" and "Watchers" you won't want to miss the explosive finale of the GENIT series.

445 pages, Kindle Edition

Published July 13, 2025

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Russ Tilton

27 books33 followers

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5 stars
81 (68%)
4 stars
28 (23%)
3 stars
6 (5%)
2 stars
1 (<1%)
1 star
2 (1%)
Displaying 1 - 14 of 14 reviews
536 reviews1 follower
July 23, 2025
What a tale! Dozens of engineered animals out to grab whoever is too close. And - no place to run! This proves my #1 axiom - use the right tools for the job. The Genit team does just that!! They do not toy with any of the creatures! Plenty of encounters - not all rosy. Somehow Randolph and LaFleur have luck on their side and manage to get off the island. At the end of the book, I like what Randolph is getting into. As with all these thrillers, the genetically altered animal are based on facts. Mr. Tilton really opens the world to new things! I hope he continues with the ideas brought out at the end of the book! Read it and find out!!! I recommend, not only this book, but the whole series!!
1,272 reviews12 followers
July 20, 2025
Almost an Ending

This was a fast paced story. While not all the bad guys got their just ending there was some justice meted out. The one thing I liked was the good guys walked away from this adventure with just a few cuts and bruises. This felt like the one that was going to tie up all the loose ends, but it didn't. Some of the loose ends are still around so the MAP hunters still have work to do. Zach Randolph is still around and just as crazy if not more so. I am hoping this series will continue and Zach Randolph will meet with the death he deserves.
8 reviews
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March 26, 2026
Unstoppable Read!

This book, as well as his others, each have built on the book before
It.I think pot is important to read them in the sequence they were written because you get to know the characters more as you keep reading. I think the books will appeal to adolescents ANF adults. You begin to realize that just !maybe the science used to create the "monsters" just maybe, using an inquisitive mind, could really happen in the future? Scary thought but one your mind can't help thinking. Please read the first one, you'll be hooked! Happy Reading (or maybe Scary Reading)?
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242 reviews1 follower
July 24, 2025
WHAT A RIDE...

I like the "last of the series." All that action, uff. Love to see all the characters. Randolph is unbelievable, and Flattner is a survivor.

The GENIT team, Dotson, Jessup, April, Amber, etc... are there to one last mission.

What I don't particularly like is all the weapons description, too detailed.

But, I have hope, with Randolph alive and his new partners the future books will be awesome.

I recommend not only this book but the whole series.
10 reviews
August 3, 2025
Awesome

I love this series. It's entertaining, engaging, and the characters are loveable. You find yourself cheering on the heroes and gritting your teeth at the evil bad guys. I hope it can continue with more adventures. The drama, fear and terror the creatures produce is exceptional and it's easy to imagine being chased by these monsters. They kept getting bigger and better with each experiment into genetic manipulation.
421 reviews3 followers
August 25, 2025
Nice way to eliminate and move the story forward

This was great in a way to combine all the villains together so only a few survive. I was wondering how this was going to become a happy needing. Evil killed evil … that was satisfying. At least they went to the island prepared! Not sure where it is going to go from here as that frequency wave dna generative and mutation frequency sounded very umbrella corporation. Wonder if it will end or get really freaky!
77 reviews
July 19, 2025
Wrapped Up? Maybe Not!

As the story unfolded Mr Tilton reminded the reader of previous story lines of who most of the players were. That was perfect since some of them may have been forgotten and the reminder was very helpful. The story flowed nicely and surprises awaited. Throughly enjoyed this and the ending surprised even more.
6 reviews
July 28, 2025
This is another great story, but unfortunately, the last in the GENIT series. However, I'm sure this very creative author has more dark conspiracies up his sleeve, as at least one of the bad guys survives this roller coaster of artificially enhanced creatures who are out to kill everything that gets in their way!
Keep on writing, Russ!
21 reviews
August 8, 2025
Monster Island

Russ Tilton does it right! I have read all the books in this series and I loved them all , if you like a creature feature you will love these books. This book has all the mutants plus something new so do yourself a favor and start at the first one and enjoy the adventures.
40 reviews3 followers
July 29, 2025
Another Great Novel. It Wass Hard To Put Down

From the very start to the end, it had twists and shockers. Jake and April once again find themselves in danger. You should read every one of these novels. I hope that there will be more adventures for Jake, April and the Genit team.
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177 reviews2 followers
August 23, 2025
Island X by Russ Tilton

A wedding is the perfect way to end this series of books. Wait - did I say end? Nope, not the end. On to more monstrous creatures than ever! Tilton, you better be writing hard, because I expect more outta you!
87 reviews
October 3, 2025
Really good wrap...or is it

Great story that tied all of the loose ends up with a bloody and violent bow. But the ending makes one hope there is a whole new twist coming. Will there be more Jessup and Flowers / Genit stories? Hope so!
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291 reviews6 followers
February 22, 2026
The end?

Much better than the previous book. Tons of action and betrayals. While it does tie up the main story, it still leaves plenty open for potential sequels or spin offs. I'll be interested to see if the author does more with it or not
32 reviews
July 19, 2025
Wow

Had to stop reading often : to think about what was said or to let my heart return to a normal rhythm. But the end of the book was truly frightening.
Displaying 1 - 14 of 14 reviews