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Clusterf*ck
"CLUSTERF★CK is the first great thriller of 2026! It's a novel that truly lives up to its name." ★★★★★
April—a married woman—never imagined that a simple encounter with a charming stranger would lead to a deadly partnership.
But when the self-assured Eddie approaches her, undeterred by her wedding ring, she can't resist his proposition.
As their twisted alliance unfolds, leaving a trail of death and destruction in its wake, it's impossible to tell who is actually pulling the strings.
With its unpredictable twists and turns, CLUSTERF★CK promises to be one of O'Sullivan's best novels yet!
April—a married woman—never imagined that a simple encounter with a charming stranger would lead to a deadly partnership.
But when the self-assured Eddie approaches her, undeterred by her wedding ring, she can't resist his proposition.
As their twisted alliance unfolds, leaving a trail of death and destruction in its wake, it's impossible to tell who is actually pulling the strings.
With its unpredictable twists and turns, CLUSTERF★CK promises to be one of O'Sullivan's best novels yet!
340 pages, Kindle Edition
Published January 27, 2026
About the author
Brian O'Sullivan
19 books1,257 followersLibrarian Note: There is more than one author in the GoodReads database with this name. See this thread for more information.
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Displaying 1 - 30 of 767 reviews
January 27, 2026
I genuinely think this is going to be my best novel yet, so f*ck it, I'm giving it five *****! And yes, I used the F-word again. Whoops :)
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March 7, 2026I almost DNF’d this at 15 percent. 🙃
At first, I thought it felt a little juvenile. Maybe even cheesy. I genuinely didn’t think it was going to be for me. And wow, was I wrong.
This ended up being a true five star read.
Somewhere along the way, everything just clicked. The tone that originally threw me started to feel intentional. The parts that felt different became the exact reason it stood out. And once I was in, I was all in.
It’s currently two hours past my bedtime because I had to finish it. I needed to know how it ended. That’s always the sign of a great thriller for me. When I cannot physically put it down.
It’s not your typical thriller, and I think that’s why I loved it so much. It has a distinct voice and a style that feels different in a good way. It stands out. It takes risks. And for me, it absolutely paid off.
If you’re a thriller lover and want something that doesn’t feel cookie cutter, I highly recommend this.
Just don’t judge it too early like I almost did. 😇
At first, I thought it felt a little juvenile. Maybe even cheesy. I genuinely didn’t think it was going to be for me. And wow, was I wrong.
This ended up being a true five star read.
Somewhere along the way, everything just clicked. The tone that originally threw me started to feel intentional. The parts that felt different became the exact reason it stood out. And once I was in, I was all in.
It’s currently two hours past my bedtime because I had to finish it. I needed to know how it ended. That’s always the sign of a great thriller for me. When I cannot physically put it down.
It’s not your typical thriller, and I think that’s why I loved it so much. It has a distinct voice and a style that feels different in a good way. It stands out. It takes risks. And for me, it absolutely paid off.
If you’re a thriller lover and want something that doesn’t feel cookie cutter, I highly recommend this.
Just don’t judge it too early like I almost did. 😇
February 25, 2026
Maybe the dumbest, worst-written book I have ever attempted to read. Basic writing with many misused words, one-dimensional characters who all had the same voice and zero development. A hideous attempt. I’m positive all the five star reviews are from the author’s friends and they didn’t actually even read the book.
February 21, 2026
If negative stars were an option, I would use them. I genuinely do not understand the praise this book receives.
The premise felt weak from the start, the plot was predictable, and there was no real suspense. I kept waiting for something shocking or clever to happen, and it never did.
I usually do not finish books that are not working for me, but I kept going because of the strong reviews, convinced something big had to happen.
A chaotic story is not the same as a compelling one. This was neither exciting nor surprising. I would not recommend it.
The premise felt weak from the start, the plot was predictable, and there was no real suspense. I kept waiting for something shocking or clever to happen, and it never did.
I usually do not finish books that are not working for me, but I kept going because of the strong reviews, convinced something big had to happen.
A chaotic story is not the same as a compelling one. This was neither exciting nor surprising. I would not recommend it.
February 6, 2026
with its predictable plot, it felt like this author included unnecessary sentences in order to make the book seem longer.
i’m disappointed as i’ve heard great things about this book. this was my first of this author and probably my last.
i’m disappointed as i’ve heard great things about this book. this was my first of this author and probably my last.
February 6, 2026
Brilliant
This was brilliant. It was so much fun reading the four different character points of view with their different perspectives of the same situations happening to them. The reactions they expected versus the reactions they received as they twisted and connived was comical. And Harry Shoe! How could you not laugh at a name like that!
This was brilliant. It was so much fun reading the four different character points of view with their different perspectives of the same situations happening to them. The reactions they expected versus the reactions they received as they twisted and connived was comical. And Harry Shoe! How could you not laugh at a name like that!
February 28, 2026
Never was a title morw fitting. A clusterf*ck of shite writing from start to finish. I beg you, think before inflicting your writing on the world without an editor.
January 29, 2026
I have yet to be disappointed in any of Brian's books and Clusterf*ck is no exception! I felt this was a bit different than anything I have read by him. Super short chapters that make you say "just one more" about 60 times in a row. Chapter 107 had me clenching my jaw badly with the thought "WTF is about to happen"! Well done Brian. First book in many months that made me stop almost everything to finish in 24 hours. Looking forward to the next one!
January 31, 2026
What the Clusterf*ck?!!! 🤯
Brian D. O'Sullivan - Author's Clusterf*ck grabs you by the collar, smirks in your face, and takes you on a wild ride that you never want to end.
The super short chapters are like small doses of adrenaline that keep you coming back for more. Each one has a punchline, a twist, or a moment of pure character gold. It's "just one more chapter" and before you know it, you've read half the book.
The first-person point of view that flips in each chapter is what makes the experience incredible. It gives the story a raw, intimate, and sometimes hilarious edge. You’re not just reading about the chaos—you’re inside it, feeling every awkward mishap, every sharp observation. O'Sullivan's character dialogue is so good that you'll forget you're reading but feel like you're part of the conversations (there's none of that overdone "he said, she said, he said, she said" crap).
The pace is perfect and the characters seem like actual individuals you've met (and maybe tried to avoid). From beginning to end, it's smart, snappy, and very exhilarating.
Clusterf*ck is the only choice if you want something clever, fast-paced, and hard to put down!
Brian D. O'Sullivan - Author's Clusterf*ck grabs you by the collar, smirks in your face, and takes you on a wild ride that you never want to end.
The super short chapters are like small doses of adrenaline that keep you coming back for more. Each one has a punchline, a twist, or a moment of pure character gold. It's "just one more chapter" and before you know it, you've read half the book.
The first-person point of view that flips in each chapter is what makes the experience incredible. It gives the story a raw, intimate, and sometimes hilarious edge. You’re not just reading about the chaos—you’re inside it, feeling every awkward mishap, every sharp observation. O'Sullivan's character dialogue is so good that you'll forget you're reading but feel like you're part of the conversations (there's none of that overdone "he said, she said, he said, she said" crap).
The pace is perfect and the characters seem like actual individuals you've met (and maybe tried to avoid). From beginning to end, it's smart, snappy, and very exhilarating.
Clusterf*ck is the only choice if you want something clever, fast-paced, and hard to put down!
February 15, 2026
Brian Fkn O’Sullivan this was an incredible book. I stumbled on this book accidentally while looking on my kindle for my next read. This popped out, I have never read anything from this author, thought hmm let’s give it a go. Hooked me immediately which is ALWAYS my favorite. I read for enjoyment and I want to enjoy it the whole time, not half way through. Anyway. The I loved the short chapters, all the POV’s the plot, the twist. I have more to say but I don’t want to spoil it. Why have I never heard of this author, I’m interested if the other books are just as good. 10/10 highly recommend.
April 16, 2026
I didn't hate it, mostly because it had short chapters and was a fast read.
The characters read cartoonishly one-dimensional. Very predictable and ultimately unsatisfying.
The characters read cartoonishly one-dimensional. Very predictable and ultimately unsatisfying.
February 3, 2026
Well done, sir!!!! I absolutely could NOT stop reading this one!! I'm already a huge fan of this author, but he has truly outdone himself. 5 ⭐s, 10/10, you absolutely have to read this book!!!!
March 3, 2026
Couldn't put this down!
What a great thriller! I could not put this down and read it in one evening. Chapters are short and sweet. Told from 4 POVs. Had me hooked immediately.
What a great thriller! I could not put this down and read it in one evening. Chapters are short and sweet. Told from 4 POVs. Had me hooked immediately.
February 21, 2026
Not for Me
I finished this book with the hopes it would get better. I was sorely disappointed. The writing was bad, the characters were unlikeable, and nothing truly interesting happened. I don't recommend this book.
I finished this book with the hopes it would get better. I was sorely disappointed. The writing was bad, the characters were unlikeable, and nothing truly interesting happened. I don't recommend this book.
February 12, 2026
Wow what a ride this was!! Definitely has an appropriate title! Short fast chapters, twists and turns and the shock factor had me reeling!! I ate this book up and would definitely recommend!!
April 18, 2026
Messy messy messy!!! Everyone is messy!! You can never go wrong with a thriller that has short chapters and multiple POVs. The writing style wasn’t my fav, but the premise was fun! Narcissism on high alert 🤣. This book will keep you engaged and, even if the plot twist is predictable. Quick popcorn thriller to get you out of a reading slump. It may not be a literary masterpiece, but neither is Frieda McFadden 🤣. 3.5⭐️
January 31, 2026
Brian O'Sullivan has done it again!! A book that truly lives up to its name. Twists, turns and WTF moments galore. And that ending!!! Go grab your copy now.
One of my absolute favorite authors and a truly nice guy who engages with his readers. Thank you 😊
One of my absolute favorite authors and a truly nice guy who engages with his readers. Thank you 😊
March 14, 2026
UNPUBLISH THIS. It is just objectively so bad. The writing, the story, the characters. Anyone who has rated this more than 2 stars needs their hard drive checked and their license revoked
January 28, 2026
My first from O’Sullivan but not my last!
Totally enjoyed the short chapters and how it helped move the story forward making you say, “I have time for one more 5 minute chapter.” Before I knew it, all 109 chapters were done!
Totally enjoyed the short chapters and how it helped move the story forward making you say, “I have time for one more 5 minute chapter.” Before I knew it, all 109 chapters were done!
March 6, 2026
I thought it was an overused premise and a disappointing ending. The three stars were generous.
February 28, 2026
Plot twist in the end was so good ! Def a good read
March 5, 2026
4.25⭐️ This was a very fast paced book with lots of short chapters, which made it really easy to read. The twists and different points of view kept things interesting. Overall a fun and entertaining read.
March 31, 2026
It started off really good, I was hooked from chapter two. However, through the 4 points of views it became very repetitive often repeating the same events from the different views.
I also found the ending to be very lacklustre.
I also found the ending to be very lacklustre.
April 2, 2026
Do you trust your husband?
Does your husband trust you?
Is it allllways just about money? Or something more?
Great book a lot of twists with a satisfying ending 💫
Will definitely be looking into this author more 😍
Does your husband trust you?
Is it allllways just about money? Or something more?
Great book a lot of twists with a satisfying ending 💫
Will definitely be looking into this author more 😍
March 6, 2026
Love love love!
The twists and the unpredictability was on point! It had me second guessing what I thought and I was NOT ready for half of what happened. The characters could have used some more developing… but the story it’s self made up for it.
The twists and the unpredictability was on point! It had me second guessing what I thought and I was NOT ready for half of what happened. The characters could have used some more developing… but the story it’s self made up for it.
March 1, 2026
Easy read but kind of confusing keeping the characters straight
February 28, 2026
New author for me! I was intrigued from the first page and it was a wild ride. I guess the right person prevailed in the end ... but I wish, for once, the bad guy won. Ha ha ha
February 24, 2026
This book was fast paced from the beginning and the short chapters made it easy to get through. Entertaining read.
February 18, 2026
I loved this one!!! Full of absolute chaos from start to finish, this book is a clusterf*ck of a read!
Fast-paced, multiple POV, toxic relationships, totally unhinged, unputdownable (I read it in one day), characters you love to hate, it’s everything you need in a book!!
Fast-paced, multiple POV, toxic relationships, totally unhinged, unputdownable (I read it in one day), characters you love to hate, it’s everything you need in a book!!
February 19, 2026
Per usual. Another enjoyed thriller book. It was a good read that kept me engaged. I am definetly going to check out another book from this author!
Displaying 1 - 30 of 767 reviews