"Catalyst Gate"—the 3rd book in "The Protectorate" Trilogy by Megan E. O’Keefe—delivers on the characters’ story arcs, the conflicts, the world-building, and, of course, the space fights. This is no longer a complex political conspiracy, but a war to preserve humanity; and, not everyone makes it out unscathed or healed. All of the protagonists and their companions are resolved to stopping Rainier, but first they have to confront how her actions in the past has led to this upcoming showdown. The war forces all of them to develop into the “heroes” they have to become; yet, their ordeals won’t be straightforward. "Catalyst Gate" is an action-filled conclusion to an entertaining space opera trilogy. The characters and the plots sucked me into the story and kept me there after its end. This trilogy needs to be read by all sci-fi fans because they don’t know what they are missing.

There’s a lot to unpack in this review as I read all 3 books in the series one after another over the past couple of weeks. And it feels like I just read a 1600-page book, as it definitely appears like it was carefully crafted and planned that way. So, although the review focuses on Catalyst Gate I’m providing an overall review of the series, as the final book delivers on all the promises and questions raised throughout the trilogy and I can’t review the conclusion book without considering the previous tomes. Overall, there were a few slower moments in the second book—definitely on purpose—but in the end, I loved it through and through.

The plot is spread out over several components throughout the series (and concluded in Catalyst Gate) and if you enjoy chapter ends that pushes you over the edge (“What?”), then you’ll be served. You experience politics, mostly through the eyes of Sanda’s brother Biran as he blossoms into a leader in the Keepers’s world. Also, we have Sanda—the main character—who throws us left and right through a sequence of events starting with her and a sentient ship in the first book all the way to godlike forces derived from ancient aliens and technology. As a Sci-Fi narrative, the Protectorate series delivers all the parts you expect in this type of novel.

We also get an extensive supporting cast of characters without a single person having the same skills, personality and behaviours…and they all strategically fill a role in the overarching trilogy…and I simply loved it! In the initial chapters, each character got their introduction and I couldn’t quite grasp their role in the larger scheme of things, but eventually it all made sense. The trilogy is thoroughly planned and delivers on all cylinders.

And the series presented a history and world building that connected to our present—and showed how we could evolve—if the elements presented in these stories were our reality. Absolutely logical and believable.

So if you didn’t get my passion for Megan O’Keefe’s books in this review; I truly enjoyed them and looking forward to read more from her. In conclusion, if you’re looking for a space-opera trilogy, filled with tension-driven scenes, politics, tech to fill a 30th century gadget magazine, Catalyst Gate and The Protectorate series is a must Sci-Fi read.

I imagine that the beginning of any story must be a difficult time, with ideas crowding on the writer’s mind and clamoring for release, but I also believe that bringing it to a close must be equally trying, if one wants to tie up all the narrative threads in a satisfactory way for creator and readers alike: Megan O’Keefe managed to do so very well, and in a breath-stopping, compelling way.

What started as a more personal journey in the first book of the trilogy, Velocity Weapon, which focused on the main character Sanda Greeve and her discoveries aboard the AI-driven ship Light of Berossus, then turned into a system-wide menace in the second installment, Chaos Vector, to be ultimately expanded into the threat of galactic annihilation in this conclusive volume of the trilogy, one that I once again hope will be optioned for a TV series by some enlightened network executives, if such creatures exist, because this story deserves to be enjoyed in both mediums, and it possesses every quality to turn into a visually stunning, story-intense show.

In the final book of the saga we find all of the people we got to know along the way, and can enjoy their expanded characterization and the huge twists and revelations that keep coming at them, and at the readers, with a relentless pace that still manages to offer a cohesive, engaging story never missing its focus despite the complex interweaving of its many narrative threads. While Megan O’Keefe keeps faithful to the structure of the three main POVs employed until now - Sanda, her brother Biran and Jules Valentine - she still finds a way to flesh out the secondary characters with depth and facets that add layers to the story and make you care for them quite deeply, and it hardly matters whether these characters are actual people or not, because Bero - the A.I. entity who is Sanda’s major ally - comes across as a delightful personality, capable of both great determination as well as subtle humor.

What was hinted at before and becomes dramatically clear in Catalyst Gate is that humanity, despite its amazing progress, has not evolved beyond its own self-centeredness and petty squabbles, that reaching for the stars and expanding its civilization there has not cured them of the need to conquer without thinking about possible consequences: once the danger threatening mankind is revealed as the repercussion of an act of extreme hubris, I kept thinking about a sentence in Tolkien’s LOTR about the Dwarves “delving too greedily and too deep” and therefore releasing their own nemesis. The scourge that humans unleashed is the main element driving the story here, and it does so through a series of interconnected threads that impart an almost impossible acceleration to it: more than once I felt the need to stop and come up for air, trying to distance myself a little from the constant adrenaline surge of the action, but I could not stop for long because the story kept attracting me like a powerful magnet.

It’s amazing to understand, in the end, how the past and the present are closely tied, how the glimpses of humanity’s road to the stars connect with the events in the current timeline, and there are some quite harrowing, edge-of-your-seat moments as the various characters try to piece together those revelations from that past with the dangers of the present, all the while dealing with their own problems - and secrets. Yes, because there are still many truths still to be revealed in Catalyst Gate: if you thought that all the jaw-dropping surprises had been used up in the previous books, well, think again, because there are quite a few still in store for you. And some will prove to be more than unexpected…

Characters are still shining as brightly as in the previous installments, from Biran who finds himself having to step into his position with the kind of strength and hard resolve that seemed far from his personality; to former spy Tomas, who is still trying to understand his place in the world and the direction his newfound emancipation must take, but knows for certain where his loyalty must lie; to Bero, once the captive A.I. on the ship Light of Berossus and now a powerful player in the galactic milieu, yet one possessed with a delightfully childish glee about its skills (“I continue to be the most effective weapon in the known universe”). Nor are the secondary players forgotten here, particularly where Sanda’s motley crew is concerned: Megan O’Keefe took these disparate individuals and turned them into one of the most engaging, most enjoyable fictional found families I ever encountered, one whose banter - even in the face of possible destruction - offers welcome rays of light in a very dark, very troublesome background.

And of course Sanda: I connected with this character from day one, admiring her resilience and her no-nonsense approach to problems, even physical ones, like the loss of one leg which has been affecting her from the very start and served to showcase her attitude and personality quite effectively. Sanda is indeed the perfect modern heroine, one who can both kick ass and be affectionate and caring toward her families - the one she started with and the one she built around her. The perfect balance between human frailties and courage, the way she can face even the most desperate situation with tenacity and determination have been the best feature in Sanda Greeve, and those that made this series quite special besides its enthralling core story.

As I said at the start of this review, bringing a saga of such magnitude as The Protectorate to its close might hold its own pitfalls, but Megan O’Keefe proved to be a very skillful weaver here, always keeping a tight control on her creature and delivering an end that is both satisfactory and emotionally appealing. If you are looking for a compelling space opera series with depth and substance, you need look no further.

Another great book by O'Keefe. I like the evolution of the plot in this series. Same for the characters and I find the writing to be even better than the last book so, obviously, she is young and keep improving! Can't way to see what will come next from her! I recommend it!