Brandt Legg’s Cosega Sequence Series

Brandt_LeggAbout the author:

Born: Fairfax County, Virginia


Thriller Sub-genre: Techno-thriller

Future of the Series: The next in the series is entitled the Cosega Shock with an expected release date on 12/29/2022.

My review of the Cosega Sphere

The Simon Review

The author of the Cosega Sequence Series, Brandt Legg, has lived a life that could be the subject of a first rate thriller in its own right. At the tender age of ten, Legg used his hobby in stamp collecting to start a business by taking advantage of the recession that occurred in the early 1980s and inflation in the value of stamps. By the time he was 20, he was financially comfortable and then began investing in real estate and other businesses. He soon became a multimillionaire, and was dubbed the ‘Teen Tycoon’ by the mainstream media. By this time, Legg was feeling pretty invincible until the crash of 1987 which resulted in him losing his entire fortune and spending a stint in a federal prison on charges of inappropriate financial dealings. His time in the penitentiary, gave him the opportunity to reflect on his failures and his hopes for the future. Now, Legg uses his brilliance to write fiction and dabble in photography.

The Cosega Sequence Series begins with Ripley Gaines, a well-known archaeologist discovering a highly advanced artifact that is believed to be millions of years old. Gaines hypothesis is that the artifact, which he has named the ‘Eysen’, from an ancient term that stands for “to hold all the stars in your hand”, was left by some alien race. Now there seems to be a whole lot of people that know about this artifact even before Gaines finds it and wants to get their hands on it no matter what the cost. It doesn’t take too long for Gaines to realize that his life is in danger and he is on the run along with National Geographic writer Gale Asher, who happens to be at the site when the Eysen is discovered. The rest of the plot involves Gaines and Asher tapping into the secret of the Eysen and being chased by the Vatican, the FBI, multibillionaire Booker Lipton, and the latest thriller writer’s whipping bad boy; the National Security Agency (NSA).   I got a very strong feeling that Legg does not have a great fondness for the Catholic Church, as the portrayal of the Vatican boys are the closest thing to the devil incarnate.

Devil Incarnate? You tell me. (Wikimedia Common)

The series is really a trilogy and reads as if it is one long book, as the beginning of the next book in the series takes off immediately where the previous book ends, which means the books need to be read sequentially and relatively close together. The series is very action oriented which begins right from the beginning and doesn’t let up until the very end. In fact, there may be a bit too much action and not giving the reader and the characters enough time to regroup between action sequences. My major gripe about the series is that it is too long. Too much time was spent on the different groups and agencies chasing after Gaines and Asher. In fact, the second book in the series, The Cosega Storm, seemed more like an episode of the Keystone Kops, with the FBI, the Vatican guards, Lipton’s henchmen, and the NSA all fumbling over each other, and even though the odds were very much in their favor they still could not successively capture Gaines and Asher. This is unfortunate because this takes away from the more positive aspect of this series which delves on the topic of what would be the consequences if humanity found absolute proof in its origins and the true secrets of the universe. Nonetheless, Legg presents a very thought provoking and yet fun sci-fi/techno-thriller and I believe Legg will have a promising future as a writer.

Simon’s pick:

Most Favorite Novel in the Series- Cosega Search and Cosega Shift– because they were equally entertaining

Least Favorite Novel in the Series- Cosega Storm- because of the Keystone Kop phenomena.

What about the science? Even though the Eysen is an artifact that is technologically advanced, Legg didn’t include any actual science or technology to base it on.

The Ripley Gaines Technical Word in Review: The Theory of Everything– I am not referring to the award winning movie about Stephen Hawking but instead referring to what is considered to be the holy grail of theories that physicists and mathematicians strive to find. The theory of everything is a hypothetical model that would explain and combine all the physical characteristics of the universe. Einstein, in his later years, was really the first to consider the idea of a theory of everything by working on what he call the unified field theory, which is a theory that combines Einstein’s general theory of relativity in relation to gravity and quantum theory which deals with nature at the atomic and subatomic level. However, Einstein worked on the unified field theory until his deathbed without success.

After Einstein’s death, other scientist began working on the concept of the theory of everything and have developed a possible solution known as the superstring theory with a more recent version known as the M-theory. The basis of the M-theory is that all energy and matter are made up of one-dimensional vibrating strings that exist in multidimensional hyperspace. Many physicists are excited about this latest version of string theory as it explains many of the problems the resided in the earlier versions of string theory. So far, string theory only works out mathematically, the true test would be to prove it experimentally which may be very difficult if not impossible.

Photo by The Mad LOLScientist

“I’ve spent several billion dollars funding research into a new field called Universe-Quantum-Physics or UQP. As you know, quantum mechanics is concerned with aspects of physics at the nanoscopic level, subatomic particles, the theory of everything, infinite layers, and the like. UQP goes beyond all that.”Cosega Shift

Books in the Series by Order:

Most Favorite in the series: Cosega Sphere  with a score of 4.43

Least Favorite in the series: Cosega Search with a score of 3.98

Based on overall ratings from Goodreads, Library Thing and Amazon (US & UK)

Cosega_Search#1-Cosega Search- 2014

First Line:

“How quickly can you get to Virginia?”


Ripley Gaines: Archaeologist that discovers the ‘Eysen’

Larsen Fretwell: Co-archaeologist working with Gaines

Booker Lipton: Multi-billionaire who funds Gaines archaeology expeditions

Gale Asher: Journalist for National Geographic and becomes Gaines partner on the run

Josh Stadler: Asher’s photographer

Wayne Hall: Senior FBI agent

Dixon Barbeau: FBI agent

Sean Stadler: Josh Stadler’s younger brother

Francesco Pisano: Vatican Representative

Joe Nanski: Vatican secret police

Mark Leary: Vatican secret police

Jaeger: Senior NSA official

Harrison Dover: Attorney General

Senator Monroe: US senator that aspirations to being president and former lover of Gale Asher

Clastier: A rogue priest from the past that holds secrets to the Eysen

The Setting

Virginia, New Mexico

He had been looking for it his whole life. When he finally found it, it made no sense. Now everyone wants it. Nothing will ever be the same again.

Ripley Gaines, a brilliant archeologist, has spent his life searching for an elusive artifact to prove his controversial theory. What he finds shocks even him. The discovery rewrites human history and promises to change the planet’s future. It has to be suppressed.

The most powerful forces in the world align against him, and a deadly competition for the artifact ensues. Capturing Gaines is not enough; he, and everyone who has seen the artifact, must be killed. His only hope, is to stay alive long enough to decode the Cosega Sequence.

Dig far enough into the past . . . you may just discover the future.

In all his years of searching for a Cosega find, he’d assumed there would be some resistance at the new view of our past, but he’d never expected to be hunted like an animal.

Looking for a review of Cosega Search?  Check out:

Josh Landry

Writer Christopher Fischer


Amazon Rating-US: 4.24 out of 5 stars based on 1,180 ratings

Amazon Rating-UK: 4.45 out of 5 stars based on 178 ratings

GoodReads Rating: 3.79 out of 5 stars based on 1,966 ratings

Library Thing Rating: 3.91 out of 5 stars based on 11 ratings

Total Score 3.98 (updated 9/26/18)



Cosega_Storm#2-Cosega Storm- 2014

First Line:

Soldiers had surrounded the house.


Ripley Gaines, Larsen Fretwell, Booker Lipton, Gale Asher, Wayne Hall, Dixon Barbeau, Sean Stadler, Francesco Pisano, Joe Nanski, Mark Leary, Harrison Dover, Senator Monroe and Clastier

The Setting

New Mexico

Gaines and Asher, caught in a storm of deceit, corruption and power, desperately struggle to escape. But running isn’t enough. They must piece together the mystery of Clastier’s life, understand the incredible artifacts, and somehow discover what links them all together.

What really happened in the past, and how will it change the future? As each extraordinary secret of the Eysen is revealed, the danger escalates. The more Gaines learns, the less he knows who he can trust. But his most difficult challenge is the paradox of the Cosega Sequence. Failing to decode it in time will cost him his life, yet succeeding means he must die.

Discover enough of the past . . . you may just destroy the future.

Looking for a review of Cosega Storm?  Check out:


Amazon Rating-US: 4.48 out of 5 stars based on 281 rating

Amazon Rating-UK: 4.76 out of 5 stars based on 83 ratings

GoodReads Rating: 4.07 out of 5 stars based on 672 ratings

Library Thing Rating: 3.38 out of 5 stars based on 4 ratings

Total Score 4.23 (updated 9/26/18)




Cosega_Shift#3-Cosega Shift- 2014

First Line:

The shot rang deafeningly loud; an explosion of blood and flesh covered his chest and face.


Ripley Gaines, Larsen Fretwell, Booker Lipton, Gale Asher, Wayne Hall, Dixon Barbeau, Sean Stadler, Francesco Pisano, Joe Nanski, Mark Leary, Jaeger, Harrison Dover, Senator Monroe and Clastier

The Setting

New Mexico and Mexico

Close to cracking the meaning of the Cosega Sequence, he has gone beyond proving that modern humans did not create Earth’s first technologically advanced civilization. The Eysen has revealed secrets that exceed the most fantastical imaginings. But the combination of knowledge and destiny are dangerous.

As the world’s strongest powers move in on him, Gaines learns his enemies are nearer than his friends. They will do anything to obtain the Eysen and silence him. With time running out, the lost Clastier Papers may hold the key. Who were the Cosegans? What did they want us to see? And, what did they need us to know?

Destroy enough of the past . . . you may just dictate the future.

Looking for a review of Cosega Shift?  Check out:


Amazon Rating-US: 4.50 out of 5 stars based on 311 rating

Amazon Rating-UK: 4.47 out of 5 stars based on 73 ratings

GoodReads Rating: 4.12 out of 5 stars based on 623 ratings

Library Thing Rating: 3.33 out of 5 stars based on 3 ratings

Total Score 4.26 (updated 9/26/18)


Black hole


Cosega_Sphere#4-Cosega Sphere- 2016

Listed #421 out of 553 on Goodreads Best Technothriller Ever Book List

Listed #108 out of 168 on Goodreads Best Sciencethrillers Book List

My review of the Cosega Sphere

First Line:

“They’re alive,” Taz, a young operative, said to his superior, a man known only as Stellard.


Ripley Gaines, Booker Lipton, Gale Asher, and  Dixon Barbeau

The Setting

Fiji and Hawaii

He found proof of the impossible,
Now . . . he must do the impossible.

Seven years after their “deaths,” Gale and Rip have just three days to find the Cosegans inside the Eysen-Sphere, solve the five Cosega mysteries, stop the final Divinations, and save their daughter. Three days with everyone after them, three days to unlock the past, survive the present, and change the future. There is not enough time. It is truly impossible. But then time is a funny thing.

Dictate enough of the past . . . you may just dominate the future.

Amazon Rating-US: 4.60 out of 5 stars based on 103 rating

Amazon Rating-UK: 4.81 out of 5 stars based on 27 ratings

GoodReads Rating: 4.29 out of 5 stars based on 201 ratings

Library Thing Rating: not rated

Total Score 4.43 (updated 9/26/18)

#5-Cosega Source- 2021

Some said it was over.

It isn’t.

Others thought they understood.

They didn’t.

Discovering the source rewrites history . . . again, and transforms the future.

We will all be forever changed.


#6-Cosega Strike- 2021

The Sequence continues…

The Pharaoh’s Eysen has fallen into the wrong hands.
War is coming with the Havloses.
There is a traitor among the Cosegans.
Only days remain on the Terminus Clock.
And things are about to get worse.

Facing the end of civilization, there is only one chance.
Rip and Gale must decipher the hidden clues of Nostradamus and Leonardo da Vinci.
It is beyond impossible.
Yet, maybe the impossible can save them all.

#7-Cosega Shock- (Expected release date 12/29/22)

The Sequence continues . . .

With enough energy one can move mountains,
travel to heavenly bodies,
build world-ending weapons,
or do something so dangerous that it is illegal to even discuss,
forbidden even to think about.

One man defied it all . . . and the consequences are beyond comprehension.

Prepare to be shocked.