The series that started as a Wattpad story, grew into a global bestseller, and then spawned three Prime Video movies, isn't over yet. Mercedes Ron has officially announced that a fourth book will be added to the Culpables series: Their Fault (Culpa vuestra) — and the English translation will be released in 2027.
Who is Mercedes Ron?
Mercedes Ron López is an Argentinian-Spanish author known for the Culpables series, a trilogy that gained popularity through Wattpad. She started publishing her stories online on Wattpad, building a readership of millions before getting officially published. Goodreads
She is a New York Times bestselling author with over three million copies sold worldwide. Her books are described as perfect for fans of Ugly Love and After — relatable, emotionally intense romance for a younger audience. Goodreads
The Culpables reading order
Before you start Their Fault, you must have read the first three books. This is the complete reading order:
| # | English Title | Spanish Title | Year EN Translation |
|---|---|---|---|
| 1 | My Fault | Culpa mía | June 2023 |
| 2 | Your Fault | Culpa tuya | December 2023 |
| 3 | Our Fault | Culpa nuestra | February 2024 |
| 4 | Their Fault | Culpa vuestra | 2027 |
Per book: what to expect?
My Fault — Part 1
My Fault follows seventeen-year-old Noah Morgan, who falls in love with her new stepbrother — the boy who leads a hidden double life under their family's roof. PenguinRandomhouse.com
Forbidden romance at its most direct. Noah and Nick can't stand each other — until they do. My Fault has all the ingredients that make the series so addictive: enemies to lovers, stepsibling romance, and an emotional intensity that grabs you by the throat.
Tropes: Stepsibling romance + enemies to lovers + forbidden romance
Start here. Never skip.
Your Fault — Part 2
Your Fault follows what happens when Noah falls in love with Nick — because their relationship is anything but easy. They are fire and electricity, and when they are together, sparks fly from all sides. Culpable Wiki
The tension from the first book escalates. Secrets surface, loyalties are tested, and the question of whether Nick and Noah are truly meant for each other becomes increasingly urgent.
Spice level: 🌶️🌶️🌶️
Our Fault — Part 3
Our Fault is the third and concluding book in the Culpable trilogy. Nick and Noah's relationship is going through its worst moment, and it seems nothing can ever go back to how it was. Culpable Wiki
Officially the end of the trilogy — but Their Fault proves that Mercedes Ron wasn't done with Nick and Noah yet.
Spice level: 🌶️🌶️🌶️
Their Fault — Part 4 (2027)
Their Fault comes after the "happily ever after". But let's be honest — Nick and Noah's story is bigger than any ending. The arrival of little Andy has brought not only endless love but also... The Well~Read Moose
Details about the plot have not yet been fully revealed, but the premise is clear: Nick and Noah have become parents to Andy, and the new life they are trying to build together brings new challenges.
There is only one thing more dangerous than Nick and Noah against the world: Nick and Noah against each other. Explosive. Unpredictable. Unstoppable. This story proves that love can save you — but sometimes it also sets you on fire. And once the flames ignite, no one leaves unscathed. Wikipedia
Expected release date English translation: 2027
The Prime Video movies: watch them before you read
The Culpables series has now produced three Prime Video movies:
My Fault (2023) — the original Spanish film starring Nicole Wallace and Gabriel Guevara. One of the most-watched Spanish-language films on Prime Video ever.
Your Fault (2024) — the sequel, also on Prime Video.
Our Fault (2025) — the conclusion of the trilogy on Prime Video.
My Fault: London (2025) — an English-language remake released on Amazon Prime Video on February 13, 2025.
If you're new to the series: start with the movies for a quick introduction, or dive straight into the books for the full emotional depth.
Why the Culpables series is so popular on BookTok
The Culpables series started as a Wattpad phenomenon and has grown into one of the most shared romance series on BookTok — and that's no coincidence.
Relatable tropes. Stepsibling romance, forbidden love, enemies to lovers — the series has exactly the combination that brings BookTok to great heights.
Emotional intensity. Mercedes Ron writes drama that feels like you're right in the middle of the story. Every argument is physically palpable, every reconciliation is catharsis.
Fast reading experience. The books are short and fast — ideal for readers who love page-turners and can finish a series in one weekend.
The movies. The fact that Prime Video has made three films gives the series a cultural impact that has further popularized the books among a new generation of readers.
Read the series before Their Fault is released
With Their Fault coming in 2027, you have plenty of time to read the first three books. My Fault, Your Fault, and Our Fault are quick reads — most readers finish them in a long weekend.
📚 Save your favorite Nick & Noah pages
Our romance bookmarks are perfect for preserving the most intense moments.
→ View romance bookmarks
What to read after the Culpables series?
For more forbidden romance:
Twisted Love by Ana Huang has the same brother's best friend energy. Read our article on forbidden romance books.
For more stepsibling romance:
The Culpables series is the most-read stepsibling romance on BookTok. Icebreaker by Hannah Grace has similar chemistry in a different setting.
Want to be surprised?
Our Blind Date Book (Romance) lets you choose the genre without knowing the title.
Complete your Culpables reading set
💕 The perfect Culpables reading set:
✔ Romance Bookmark — for the most intense Nick & Noah moments
✔ Spicy Bookmark — for the hotter scenes
✔ Blind Date Book (Romance) — while you wait for Their Fault
✔ Book Review Notepad — record your reactions per book
✔ Reading Log (€1.99) — keep track of all four parts
✔ Glass Can — for your iced coffee or matcha while reading
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Happy reading — whose fault is it this time? 💕📚
Frequently Asked Questions about Their Fault and the Culpables series
When will Their Fault by Mercedes Ron be released?
Their Fault (Culpa vuestra) will be released in 2027. The Spanish original edition has already been announced; the English translation will follow in 2027.
How many books are in the Culpables series?
The Culpables series consists of four books: My Fault, Your Fault, Our Fault, and the upcoming Their Fault in 2027.
Should I read the Culpables series in order?
Yes, absolutely. The series follows Nick and Noah's relationship chronologically. Always start with My Fault (book 1).
Have the Culpables books also been adapted into films?
Yes. My Fault (2023), Your Fault (2024), and Our Fault (2025) have been adapted for Prime Video. My Fault: London is an English-language remake released in February 2025.
What is Their Fault about?
Their Fault takes place after the happily ever after of the trilogy. Nick and Noah have become parents to little Andy, but the new life they are trying to build together brings new challenges.
Who is the Culpables series suitable for?
The series is perfect for fans of emotional romance with forbidden love elements. It is often recommended alongside Colleen Hoover's Ugly Love and Anna Todd's After series.