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The Teras Threat #3

The Teras Triumph: The Teras Threat Book 3

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London has fallen.
With the city breached and no sanctuary left, Cassius Jones is thrust into the chaos of a dying world. Monsters roam free, factions fracture, and the University lies in ruins. Cassius must navigate shifting allegiances and the complex politics of the teras—hybrids and purebloods alike, each with their own vision of survival. But even as the line between enemy and ally fades, the darkest truths lie closer to home. As he unravels the grim origins of the University and the world it shaped, Cassius must confront everything he thought he believed—about justice, about God, and about himself. And through it all, there’s the boy he’s spent all this time trying not to love.

Now, that denial may be the last lie he can afford. In a war where no side is innocent, and no choice comes without cost, Cassius must confront who he truly is—and decide what, and who, he’s willing to sacrifice. The end is coming.

What will he save?

496 pages, Kindle Edition

Published May 31, 2025

12 people are currently reading
245 people want to read

About the author

Lucien Burr

11 books279 followers

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Displaying 1 - 30 of 33 reviews
Profile Image for Evie.
560 reviews299 followers
June 9, 2025
HOLY SHIT.

What can I even say? I feel like I am taking my first proper breath in days. The chokehold these books have had on me has been unreal. I have lived and breathed nothing but Cassius Jones and his world of horrors since I opened Lesson One in the first book.

Coming in to this final installment I had no clue how a story with stakes so high and circumstances so dire could possibly be wrapped up, and yet somehow Burr has managed to do it.

I think about the journey that I have been on with these characters, what they have been through, what they have witnessed and the growth they have undertaken and it has me feeling so emotional. I have really loved them, and the reading experience that these books have taken me on has been extraordinary.

I feel like the only way to experience these books is as I have; one long, fever dream inducing, high stress, manic episode hahaha

Cass and Leo, and their love for one another, will exist under my skin and in my heart for a long time to come ❤️.

Truly an underated gem and one of the most engaging dark fantasy/ horror stories that I have ever experienced.




In all of this chaos, it is Leo that has sustained me. If not his love, then the pleasure of the flesh. If not the pleasure of the flesh, the comfort in community. We are the same, and that small knowledge—that someone else is like me, that I am not a freak of nature—settles me more than this ancient myth’s words rattle me.








(For those who need to know, yes, somehow this story has a HEA).

(The things that I would do to get a 3.5 afterwards novella of Cass and Leo just existing. Burr name your price istg 😩😩😩😂)
Profile Image for reverie.
160 reviews23 followers
June 5, 2025
This review covers all three books. There are no spoilers, aside from a few character names.

I feel unspooled, as though my existence has been brought to mere blood and ash. I mourn--not for the events of the book, but for the story itself having ended.

It is over. Down to the final, unforgiving page, The Teras Threat has been a gift. A terrible, treasured gift, but one nonetheless. I thrive on horror. I revel in what is brutal and raw and this... this series delivers that and more. Pain is not described in these books; it is performed. Beauty here is a cello strung with the viscera of the fallen. Laughter rings, not in triumph, but because the terror is so great that there is nothing else left to do. This book is a wound masquerading as literature. A hymn, slipped carefully between pages of blood.

Cassius Jones. Leo Shaw. Don. Victoria. Fred. Sutton, even. Friends. Family. Lucien Burr breathes life into each character just as he pours rot and despair onto every page.

I miss it already. I shall miss them.

People often call a book their “soul story,” their “heart book,” their “literary soulmate.” We find ourselves in stories, in films, in art, and we cling to the parts that reflect us. The Teras Threat trilogy isn’t some magic relic. It’s just three books, a story penned by an author far removed from my own life. It feels so ridiculous to look at these books and think, "Yes, this is where my heart lies," and yet I cannot resist.
Profile Image for Apollo.
9 reviews
Want to read
June 1, 2025
It arrives on Tuesday but that’s okay because I’m still so patient
Profile Image for stuti phalahari.
38 reviews1 follower
July 22, 2025
I was hooked. I was gagged. I was living. Cassius is on a level of his own - no notes, especially not on his characterization.

My favorite aspect, arguably, was that there’s no neat redemption, no easy moral clarity for someone like him. At the end of the day, he’s still just this 20 yr old who has the impossible task of making the right decisions for humanity while still trying, in his own way, to reckon with what he’s done and what he still refuses to lose.

Because of that, Cassius is unknowingly one of the most timeless characters I’ve ever read. He endures because he never pretended to be anything other than what he was: self-serving, unrelenting, and so deeply flawed but determined to save it all. Not because he’s a hero or he cares about doing good — what is enduring, surviving even, if not deciding what the world can’t take from you?

Also if there’s one thing Cassius Jones can do, it’s stand on business.

Everyone else was also fantastic. I think the loose ends were tied up incredibly well and the teras lore was developed enough to feel intriguing without being contrived. I understood where the emotions came from for each decisions because I was just as much on the page with Cassius and I was with any of the other characters (which was one of my original issues with the 1/2 novel). I throughly enjoyed this as a conclusion of this series, I’m incredibly happy to see them all land where they did and moreso HOW they did.




“When I ask myself why, the only answer that comes to me is that there exists a kind of expectation of the world: that things are as they always have been or ever will be. Change never feels possible. We contend with a desire to accept the now, as if living quietly will somehow prevent evil finding you. But in truth, those terrible things are happening every day, not off in some distant future.”
Profile Image for Juuu.
48 reviews1 follower
June 29, 2025
WE HAVE A COVER LET4S FUCKING GOOOOOO

give me the rabies shot the way i'm foaming at the mouth biting vomiting etc
Profile Image for mandarina.
116 reviews2 followers
December 10, 2025
para el último libro dejó el porno de lado y decidió cocinar un plot increíble sobre la resistencia bajo un régimen opresivo y el uso de la violencia frente a la imposibilidad de dialogar

muy hopecore muy love wins all pese a todo el gore y el sufrimiento
Profile Image for Dee.
168 reviews6 followers
June 22, 2025
5 ⭐

The best trilogy I've read this year. I fear that I won't be able to move on from this series, won't be able to stop thinking about Cassius and Leo, Victoria, Fred and Don, the teras, about Vengeance, and everything they represent.
Profile Image for jenelle.
34 reviews
June 4, 2025
well i’m sad this is over..my beloveds be happy
2 reviews
June 1, 2025
I am not good at…words and stuff. But. This was the best kind of gut punch I could ever want.
I’m sitting here after having finished it (after immediately telling my bff she must read it) just in shock and awe and that perfect wrap up. Do I want more? Of course I do. Does it NEED more. No it does not. This was an amazing journey and I cannot wait for more from this author.
Profile Image for Maé.
476 reviews23 followers
November 5, 2025
When I stumbled upon The Teras Trials, I never expected to find this underrated precious gem that I would fall so in love with. After adoring the second book just as much, I was anticipating the finale (but also was deathly terrified of it). The Teras Triumph picks up right after the end of the second volume, as Leo and Cassius bear witness of the colossal attack of the teras on London. Cassius knows he has to make a deal with the teras, and he will risk anything in order to save those he loves.

Every time he has touched me before now feels insubstantial. I want to be inside his ribs. I want him to consume me. I want the certainty of forever, and yet to hear him say tomorrow and tomorrow and tomorrow,to hear him choose me every day, is a different kind of blessing.


The plot was mindblowing from the very first page. You're instantly pulled into this terrifying world, and the intensity of the attack hits you just how badly as it hits Cassius. The author has such a way to make you feel everything the characters go through, to the point your heart will start hammering in your chest out of fear. The pace is relentless, and doesn't let catch have a break.

The ending of the trilogy was everything I wanted it to be. I absolutely adore how terribly sad it was, despite being overall very hopeful. The endgame doesn't change the fact that everything was about the development of the character of Cassius, which I'll come back to. But it resulted to me just holding the book to my chest, grieving the loss of these characters I followed for three books, and wondering when I'd be able to reread the entire trilogy.

I am still on my knees. In a way, I understand worship more clearly than ever before. What is God to me when I can see an amalgamate of myth, fear, and unknowable power made physical? What is God, who abandoned me as I abandoned Him, when Vengeance is here in the flesh?


This incredible story was, as always, only complimented by Lucien Burr's incredible writing. They have a way to weave words, with profound descriptions mixed with classic references, that will make you feel the anguish of the characters. My copy of the book is filled to the brim with tabs from the amount of quotes that absolutely blew me away.

As I said, the main focus of this story is Cassius. Everything, even the action scenes or the erotic scenes, resolve around the development of his character. And what a glorious development it is! Far is the kid that was deathly scared of going outside London, and who tries to convince himself ruthlessness is the only way forward. This last installment is about him finally deciding what drives him forward, and what he will do anything to protect. He's not fearless, but he chooses to battle these fears and goes head to head with the most terrifying teras. He also knows how to make the harsh decisions, and where he would blame himself for them in the previous books, in this finale he stands for each one of his choices. He's not a good character, he doesn't thrive for kindness, but he is very very hard not to fall in love with.

"Amor," I whisper.
Love.
It's never been ruthlessness. Never on its own. Everything I've done, whether it be a soft action or a violent one, I've done out of love. (…)
But it is love. Sometimes selfish. Sometimes altruistic. It is not fairy-tale love, but the self-serving, the passionate, the desperate, the fearful kind, as often as it is the compassion-ate, the self-sacrificing, the rejection of hurt.


Of course, the romance is a big part of this book. Cassius and Leo, through all they survived together, forged a bond I rarely see in fiction. Their motivation to survive for each other is plain in every action they take, and though it started as physical between them, the amount of love they have for each other is obvious to the reader. Lucien Burr has a way to write them that is absolutely heartbreaking, yet so riveting. You can't help but deeply root for them to be happy, together, even in the face of all this monstrosity and the literal end of humanity.

Of course, the strength of this book is the way you can't help but fall in love with every side character there is. Victoria, Sutton, Don, Fred, they're all complex in a way you rarely get to see in side characters. They all share a piece of Cassius' heart, and even if sometimes they hate something he will decide, they still have very strong feelings for him. At the end of everything, petty feelings are unnecessary, compared to actually caring for a friend. This sort of found family they built completely broke my heart, and made me cry multiple times during the book.

All the while, I hope he can hear the lifeblood of those actions, a vein pulsing with intention. You, you, you. It's all been for you, Leo.


The amount of emotions I felt while reading this book was unbelievable. I was scared it wouldn't compare to the first two books in my mind, but Lucien Burr managed to hold up this incredible level of writing throughout it all. I'm forevermore in love with this trilogy, and this book is easily my favorite of the year.
Profile Image for L. Spierings.
18 reviews
July 29, 2025
Who knows what will happen to this place when I tear it all down.

I was breathless.
This final book picks up right where the last one left off: with an army of Teras rampaging London. Dropped in the middle of a rush of blood and violence, both the reader and Cassius need to hit the ground running, and Burr makes sure to keep up that flying pace. This book is crowded with riveting action and thrilling revelations, in which all the pieces fall together, revealing a history of monsters, gods, and humans. A whole lifetime is fitted between the pages.

It is all a facsimile, and who can say if humanity will survive unreality?

Over the course of three books, Cassius’s and Leo’s relationship develops drastically, where it sprouted from the necessity to escape from the constant threat death, blooming into something so much more intimate with its roots in a mutual understanding and trust.

He can’t meet my eyes, and so he tells my lips, “If there is a tomorrow, I want to spend it with you. If there is a tomorrow after that, I want to spend it with you.”

This book, Cassius realises what he wants, and he fights for it ruthlessly.

Everything I’ve done, whether it be a soft action or a violent one, I’ve done out of love.

Apart from Leo and Cassius, Burr has crafted a cast of brilliant side characters, each with their own story, their own wants and needs, fears and insecurities. Each of them is fully unique, well-rounded, and profound. Victoria, Sutton, Don, Fred—I love all of you.

I have people who continuously put their necks out for me, even when I have a history of getting necks lopped off.

Lastly, Lucien Burr concludes this trilogy with a striking ending. Sacrifices made. Lives lost. Blood spilled. I was breathless. I was gagged. A striking ending to a striking trilogy. A powerful climax drenched in blood drops into an intimate resolution. Burr doesn’t bore the reader with drawn-out goodbyes or dull logistics, instead focusing on the impact imprinted on Cassius and giving a peak into his future full of mourning and healing. He keeps it short and bittersweet and it hit likes a punch to the gut.

It was always going to end like this.

This book is a beautiful story on anger and forgiveness, love and hate, fear and hope, and about coming to terms with who you are and what you hold dear and fighting for that ruthlessly.
Lucien Burr, you owe me a new heart, because these books have torn mine asunder over and over again.
Profile Image for Elyse.
402 reviews30 followers
August 4, 2025
3.5 ⭐️⭐️⭐️💫

I did not devour this book as quickly as I did the other two in the trilogy. At first, I thought it was because I was trying to savor the ending of this story I fell in love with. Then, I realized it was because I was disappointed.
This book was not horrible by any means, but it was not everything I dreamed of. Maybe it’s my fault for having such high expectations, but there were three things that really bothered me:

⚫️Cassius’ endless internal monologue. I get that this is his story he is telling us. We are reading what he wanted to share, but I feel like there was so much more happening in the first two books. We weren’t constantly in his head. We were watching everything unfold around him. It felt a little isolated here and I got kind of bored with it.
⚫️There were a bunch of grammatical and continuity errors in the first half of the book. Like the author didn’t take the time to re-read what they had written and kind of just shoved things together in places. It was strange because the second half of the book felt like it had too much care. A lot of focus on the Latin, the translations and the terminology behind each word. I don’t get what happened there.
⚫️The ending. There was so much build up for a lot of characters. Their backgrounds and their lives were so important to this story, but I feel like we were left hanging and did not get to see their stories unfold. We don’t get to see them because this is Cassius’ story and because he has been nothing but selfish since the beginning in a lot of ways, he walked away before we could see their lives. I don’t know if the author intends to maybe put out a follow up novella since there was that word someday from Cassius, but most authors don’t put “END” if they’re coming back.


I don’t know. I just was hoping for a more final ending for this story than what we got. Oh well, I really enjoyed the first two.
Profile Image for akira.
116 reviews
July 8, 2025
this book, similar to its predecessors, was an absolute wild ride. at no point in time did I have any idea as to what was coming next.

the teras triumph follows the immediate events of the second book. the teras has breaded london, carnage and death follows. leo and cassius have to separate after cassius' exile, each working towards their own goals to gather their allies and find each other again. I liked their time apart, being away from leo always seems to bring out the most feral parts of cass. he also gets his much needed resolution with fred (until like the last quarter of the book when they're at odds again, but hey, this is a messy book with messy characters).

cassius is of course the soul of this book, and leo his heart. seeing them get so close to losing each other, and then finally, finally, putting words to their feelings was one of the best parts (not to mention them desecrating another god's hallowed land 😭).

this is a very plot heavy series, but it's the characters that really surprised me. most especially was don wambsley, I never expected to like him as much as I did. but he was a really great addition to the cass/leo dynamic - an exploration of all those complex feelings. cass' introspection about seeing himself in don (a repressed queer kid that the world expects him to hate) and wanting to help him despite everything.

I have complicated feelings about the ending and the epilogue. this is much longer than the previous books but I really wouldn't have minded some more time to explore the world after. but at the end, it felt really nice to leave cassius and leo where they were.

also I don't think I've mentioned this for the others, but I have a deep appreciation for books that include illustrations. and the art of vengeance and the other teras (as well as the cass/leo art from book 1 👀) are so beautiful.
5 reviews1 follower
June 1, 2025
None of this struggle would have been worth it if there wasn’t love. I don’t mind if that reads as ideal, or embarrassing. I don’t care if I sound pathetic anymore.
I look into the eyes of Leo Shaw, and I know it’s true.


The final adventure into the unflinching land of mythical monsters is here to drag you and its characters through more terror and more desperate love. You are pushed deeper into the halls of the University and its history, surrounded by enemies only defeated if you have a strong wit and a quick trigger finger. Just when you think 'this can't get worse' (or 'this can't get more gay'), it does. The world is falling apart, new and strange monsters, humans, and gods are taking over, and Cass is ready to let it all happen it it means staying near Leo fucking Shaw.

With an unexpected middle and end, The Teras Triumph finishes the series not with a bang but a bloody and wheezing war cry. Burr blends exciting gore, horror, heartache, love, desire, amusement, and charm like a worshipping ritual, leaving the story completed but the ashes burning. With enough breath, it stays alive. Finish the monsters off, protect your friends, find your true love, read the book.
Profile Image for joonchip.
69 reviews
June 20, 2025
6 stars.

i don’t even know what to say after this… usually with fantasy books like this, and especially with the length, they take me longer than usual to finish, so i was fully prepared to take maybe 2 weeks to get through this book… i binged it in 3 days. everything from the pacing to how thrilling and interesting everything was and how fast paced this one was, to the development of the characters and the relationships, and how cassius stayed empathetic to the very end was amazing. this book was somehow the best of the three to me.

and idk what other people’s feelings may be towards him, but i LOVE don and his odd dynamic with cassius and leo and wanted so badly to see another scene with them play out 😭 even though realistically there was no room anywhere in the book for that to happen and it not feel out of place. but i ate up EVERY scene with him and cass or him and leo or just him idk he’s a great character. and in the end i was thinking “take him with you!!! 😭😭😭”

i will miss these characters genuinely. i rarely finish book series bc i lose interest in them easily but this got better and better with every book. amazing series with a very satisfying ending.
Profile Image for Morgan Sandberg.
14 reviews
June 18, 2025
4.5 stars

I always feel a little adrift after finishing a series, especially one that's had such a choke hold on me for the past couple years. This book was just as harsh and heartbreaking and also lovely as the others. Every time Cass refers to Leo as "my boy" I melt a little. This is a satisfying, if heartbreaking, ending to the series.

My one complaint is that it could have used a little stricter editing; there are typos and incorrect words used that really takes you out of the story. I also wasn't a fan of the times when Cass breaks the fourth wall and addresses the reader - it doesn't make sense to me when the story is told in present tense? If it were written in past tense, then it's like he wrote a memoir that we're reading. But with it being present tense... are we in his head? That would take me out of the story, too.

Overall, though, what a fantastic series.
Profile Image for Kiley.
142 reviews2 followers
June 22, 2025
This series snuck up on me. Started as a whim, it quickly grabbed me by the neck and did not let go until I completed it. There were so many moments throughout the trilogy that struck me: the number of highlighted passages I have to look back on says a lot by how much I was taken by this series (200?! WHAT!)

The prose was great. The characters all felt so flesh out and real! They felt really fresh to me and that’s what kept me reading. Other than the neat concept of course. This trilogy felt like it hit a lot of the things I love in books.

By the end my heart was in my throat. What a journey! One that will linger with me for a while, I’m sure.
I’m so happy to have stumbled across this series.
Profile Image for lauren.
55 reviews
June 20, 2025
Loved the direction Burr went in with this book. Cassius remains real asf. The messages and perspective of the narration have really matured and evolved throughout the series in a very satisfying away. I rarely see an author stick the landing quite as successfully as Burr does here. Just wonderful. I have no criticism, and I will forever remain obsessed with these characters and this world.
Profile Image for Lupo .
29 reviews
October 21, 2025
Beautiful trilogy, but why did it have to end so quickly, dear author? There were so many things I wanted explained that were left out, and the ending — as sweet as it was — left a lingering feeling of incompleteness. The least I can do is hope for a sequel — even a short one — just to find some closure, because being away from these characters leaves a bitter aftertaste.
88 reviews2 followers
August 1, 2025
I mean what is there to say. This is simply, objectively a good book.
Loved the world building, the writing, the character work was amazing, and for an ending it was good.
I will probably miss these guys. Miss the world.
I am grateful I got to experience this story.

favorite Guy: Cass.
Profile Image for Blake.
7 reviews
May 7, 2025
lucien is going to break my heart and as a result i fear that i will spontaneously combust
Profile Image for Andy.
16 reviews
July 5, 2025
screaming, crying, throwing up, fuckkkkk
Profile Image for Clara.
6 reviews1 follower
August 21, 2025
this series has officially stolen a piece of my heart
114 reviews
October 22, 2025
good god i have no words what a phenomenal trilogy im gonna need a year to process everything that happened in this book alone
Profile Image for fritatta.
21 reviews
December 1, 2025
Everyone needs to read this series before they die. That’s all.
Displaying 1 - 30 of 33 reviews

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