At the Threshold of the Universe by T. A. Bruno

Today I am excited to be joining the Escapist Tours blog tour for At the Threshold of the Universe by T. A. Bruno. I have thoroughly enjoyed this series and am sad for it to end – but what a fantastic ending it is! There is an amazingly generous US giveaway further down this post – be sure not to miss it! Please take a look at the posts from the other bloggers and instagrammers taking part in this tour:

At the Threshold of the Universe by T.A. Bruno
The Song of Kamaria #3
Genre: Science Fiction Fantasy
Intended Age Group:
Pages: 496
May 31, 2022
Publisher: Feathersong, LLC (Self Published)



War ravages Kamaria as an old enemy resurfaces from the depths of the ocean. Offering no support in the coming battles, the Auk’nai isolate themselves in their tightly guarded Nest. Outgunned and outmatched, humanity once again trembles on the edge of obliteration.

The Castus family is torn apart. Denton fights on the front lines, hoping to free Cade from a nightmarish foe. Meanwhile, Eliana and Nella set out on a path that will change everything they understand about the Sirens. The Song will end, but who will remain to hear its final verse?

Amazon Series Page | Goodreads

Content/Trigger Warnings:

Shown on page:

  • Body horror
  • Violence
  • Gore

Alluded to:

  • Cannibalism
  • Child harm
  • Murder

My Review

Contains spoilers for books 1 and 2 in The Song of Kamaria.

Thank you for the beautiful hardback copy of this book – the cover is my favourite of the trilogy and thank you also for the shoutout to my blog in the Acknowledgments! This trilogy has been a thrill ride that I have thoroughly enjoyed.

I was really excited to read the third and final episode in the Song of Kamaria trilogy, but also sad that the story is coming to an end in what has been one of my favourite series lately.

The stakes have been raised in At The Threshold Of The Universe. The relentless Undriel are back. The grisly horror of their absorption of human captives into their mechanical constructs is fully to the fore in the scenes which feature them. The Undriel are one of the creepiest villain races I have come across in Sci-Fi in quite a while and they are so well imagined with all of their deadly appendages and insect-like appearances.

At the end of the previous book, Cade Castus was taken prisoner and he has been absorbed, but keeps his consciousness, which allows the reader to see inside the Undriel fleet, and experience all of its horrific “mechanical purgatory” through his eyes. These sections of the narrative are not for the squeamish!

Cade is such a tragic hero in this book and you cannot help but hope and pray that he will survive the terrors of absorption and torture at the hands of the horrifying Undriel and somehow be able to reunite with his family. Cade’s telepathic link with the siren, Karx, allows him to shade walk through time and witness the back stories of each of the main Undriel characters, most of which are to be pitied for their Undriel absorption despite their later actions, with the exception of a couple of particularly despicable humans for whom I could feel no pity. These back stories are eye-opening and a very interesting way of filling in a lot of the events during the battle at the beginning of the first book of the series, while also explaining to both Cade and the reader how the persistently violent Undriel came into being.

With a terrifying roar, the machines burst forth from the forest and rushed toward the city. Since they had lost the element of surprise, they would use fear to their advantage. The machines shrieked and increased the luminosity of their glowing eyes. They moved wildly, using tried-and-true methods to instill terror in their enemies. All Undriel warriors had felt this same horror right before they became absorbed into the dark network. Deep down, they remembered how effective it was.

Cade’s deaf sister Nella also has a link with a siren – Sympha – which enables her to telepathically talk to the rocklike nezzaforms dotted all over the planet. Through them she learns more of the species known to humans as sirens, but who are actually Voyalten from a faraway starless planet. We learn that Nhymn, Sympha and Karx were part of a group sent to the planet to build a portal/gate, for which Nella is now able to use the nezzaforms to build a “Key” to open the portal, which would allow travel between the network of planets linked by this species.

Denton and Eliana believe each of their children to be dead at separate points in the book and the emotional strain and feelings of despair these episodes cause are well-written and pull hard on the heart strings. There are some amazing twists in the book, particularly one at about two thirds in, which took me by complete surprise and was a fantastic addition and genius way to give hope to the doggedly determined humans in the face of what initially appears to be an undefeatable enemy.

The humanoid birdlike species, the Auk’nai are also back in this book, but trust has been lost between them and the humans since the treaty in Book 1. They have taken over the old Telemachus ship and made it into their new Nest. They are not allowing humans to come near or even to fly over their new territory. Eliana Castus and Talulo, the Auk’nai leader must bury their grievances and try and find middle ground in order for the two species to move forward and work together against the enemy.

The epic battle at the finale of the book is extremely exciting and just keeps on going – whenever I thought it was going to end another character popped up needing to be defeated. There are a lot of major players but everything was well choreographed and didn’t get confusing. The ending to the battle was very emotional and I defy anyone to not shed a tear or two!

At the Threshold of the Universe is a thrilling edge-of-the-seat conclusion to what has been a wonderfully imaginative and creative series and one I will definitely reread. I hope there will be more stories from this compelling universe at some point in the not too distant future!

Kamaria was relentlessly beautiful.

***US Giveaway Information***

Prize: A Full Signed Set of the Song of Kamaria Series!
Starts: June 16, 2022 at 12:00am EST
Ends: June 22, 2022 at 11:59pm EST

Click here or on the image below to enter

Author Bio & Information

T. A. Bruno grew up in a suburb south of Chicago and moved to Los Angeles to pursue a career in the film industry. Since then, he has brought stories to life for over a decade as a previsualization artist. At home, he is the proud father of two boys and a husband to a wonderful wife.

Author Website:

3 thoughts on “At the Threshold of the Universe by T. A. Bruno


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