Review: Undisciplined Catalyst by Gail Koger

Posted January 22, 2026 by Jen in Rating A, Reviews, Romance, Sci-Fi or Fantasy Fiction Tags: , , ,

book cover of Undisciplined Catalyst by Gail KogerUndisciplined Catalyst
Author:
Gail Koger
Reviewer:
Sophia Rose
Rating: A-

What I’m Talking About:

At first, when voracious aliens invaded earth, a young psychic teen girl and her wacky scientist uncle are all that stand between humanity and utter slaughter.  They are joined by others, but humanity can’t do it alone.  They soon learn, help comes with a price.

Gail Koger’s Coletti Warlord’s series has always been an entertaining exciting pleasure to read.  It gets zany and over the top, but in all the best ways.  I call these “my personal outer space escapes” and they never fail to make me laugh at the shenanigans, squirm with the spicy moments, and sit riveted when an action scene is going down.

Undisciplined Catalyst may be the 19th installment in the series, but newbies to the series can easily jump in at this point. Undisciplined Catalyst is the introduction to what will be a new spinoff series set in the Coletti Warlord world.  The events of this book coincide with the events of the first book, Just My Luck (which is out of print at the moment).

Undisciplined Catalyst begins when Lexi’s dad gets called up for duty in the Middle East. It’s just been them since her mom died, but he has to leave her with his brother who is the one to tell her about her real family heritage. Uncle Ben is an eccentric scientist who lives in a bunker out in the Nevada desert. He’s invented a travel portal and, she soon discovers, he was on the level about the alien he captured. Lexi has psychic ability and learns through the Tai-Kok alien’s mental thought pictures that his race is going to invade earth and eat all living beings.

I loved following along as Ben sends Lexi through the portal to leave bombs on the alien ships. Lexi has a whoospie when the portal glitches and drops her down on another alien race’s ship and this puts the Coletti Empire on notice that earth and humans exist out there somewhere and are fighting the Tai-Kok, too. Battle Commander Kaelen takes a keen interest in feisty Lexi before she zips back through the portal.

Then the invasion happens and Lexi’s dad gets home with General Saul Jones in tow.  After recovering from their shock over what Lexi has been doing, they get up to speed and join the fight. Saul’s whole Jones’ clan is psychic and gets to work helping the humans fight and survive. But yes, they are out-gunned by a more advanced race so can’t say no when the Coletti get involved and need something in exchange.

With earth in shambles, Lexi gets assigned along with her dad and Jake Jones to the new version of policing where call outs might mean fighting aliens who drop in for a chomp or keeping people from raiding the stores for more than their allotted rations.

Space battles, alien-human battles on earth, sexy and bossy alpha alien warlords, psychic gifts and fun characters behind a likeable heroine fill Undisciplined Catalyst and make it an abso-fab start to the new Cops in Space series set in the Coletti Warlord’s world.

My Rating: A- Enjoyed A Lot
Sophia Rose

About the Book:

I was sixteen when I found out not only am I an alien hybrid, but monsters called the Tai-Kok were getting ready to invade our world. Guess who gets to stop them? Me. How?

My uncle, the mad scientist, created a machine called the portal that instantaneously sends a test subject from one location to another by converting them into energy. His idea is to port me onto a Tai-Kok ship. All I have to do is leave a bomb, hit the retrieval button on my spiffy traveler’s belt and poof! I’m back on Earth before the Tai-Kok ship goes kaboom. Sounds simple, right?

Wrong. Uncle Ben doesn’t have a clue where I’ll actually appear on the ship. It could be the engine room, the crew quarters, or even the bridge. It’s like playing Russian roulette. The Tai-Kok don’t like surprises or uninvited guests.

To make things even more fun, I have an alien battle commander stuck in my head and I’m related to a powerful Coletti warlord. Yippee. The chances of me living to see eighteen aren’t good.

Release Date: November 22, 2025
Publisher:
self-published
Series:
Coletti Warlords #19
Genre:
Science Fiction Romance
Format(s):
e-book
Book Source: Author