The show All Her Fault has become popular because of its strong acting, feelings, and surprising plot. It is a suspense drama based on Andrea Mara’s best-selling book. The story follows a mother who is desperate to find her missing son. As she looks for him, she also finds dark secrets in her family’s history. This post will talk about the ending of All Her Fault. It will also cover the cast and characters, the release date, and where you can watch it. Finally, you will find out if the show is based on a true story.
What Is All Her Fault About?
All Her Fault is about Marissa Irvine. Sarah Snook plays her. Her son Milo goes missing in a way no one saw coming. She thought it was going to be a normal day, but things change fast. Soon, she is caught up in secrets, lies, and tough choices. The show looks at how people feel when they have lost someone. It also talks about guilt. These feelings can change the way people see what is real and break their closest bonds.
The series was made by Megan Gallagher. It looks into the strong feelings and reasons behind each surprising action. This show is not just about finding out who did it, but also about why they did it. It is the story of the choices people make, being a mother, and how lying can still hurt people even after some time.
Image Credit:Sky TV
All Her Fault Ending Explained: Why Did Carrie Take Milo?
At the end of All Her Fault, people want to know why Carrie took Milo. There is a lot that happens with these characters, and their choices lead to some big changes. When you look at it, Carrie’s decision to take Milo comes from many reasons.
She wants to keep him safe and feels he is not being looked after the way he should be. In this story, the, time, and new things happening push her to make a hard call. Carrie feels that no one else will do what needs to be done for Milo. So, she steps in and takes him.
Her move is about care, love, and doing what she thinks is right. But, it also shows that people don’t always do things the easy way. Sometimes what looks like a bad choice can come from a good place, even if others do not agree. This leaves viewers with much to think about after the ending.
In the last part of the story, the truth about who Carrie Finch is comes out. She is really Josephine Murphy, who is the birth mother of Milo. Many years back, there was a sad car crash that involved both Peter and Marissa Irvine. Their baby did not survive. To deal with this loss, Peter took their baby who had died and switched the child with Carrie’s new baby, Milo.
Carrie did not know about the switch at first. Later, she found out the truth. She felt sad and hurt by what happened. Carrie took Milo, but she did not mean to hurt him. She only wanted to get her real son back.
Peter does not want anyone to find out, so he shoots Carrie during their last fight to keep her quiet. But when Marissa finds Carrie’s taped confession later, she finds out Peter’s dark secret. To hide what he did, he had also killed Carrie’s father.
What Happens to Peter in All Her Fault?
After Carrie dies, Peter tries to explain what he did. He says he did it because he loves his family and wanted to keep them safe. But Marissa feels hurt by what he did and the lies he told. She starts to plan how to get back at him.
In a cold move, Marissa switches Peter’s EpiPen with an old one. This leads to him dying from his allergy. Detective Alcaras, played by Michael Peña, looks into the case and sees what really happened. But he decides not to act, thinking Marissa’s pain is enough.
What Happens to Marissa and Milo?
After Peter is gone, Marissa works hard to keep Milo safe and help him live a normal life. The detective then finds out that Milo and Carrie both have the same brain condition called synaesthesia. This shows they are related by blood.
In the touching last scene, Marissa and Milo go to see Jenny. She is living in peace after all they have been through.
He watches from far away. Detective Alcaras does not open the case again. He knows that what Marissa did is not easy to judge. He understands the situation in his own quiet way.
All Her Fault Release Schedule and How to Watch
All eight episodes came out at the same time in the U.S. for the series’ first showing on Peacock on Thursday, November 6, 2025.
In the UK and Ireland, All Her Fault will be on Sky and NOW starting from Friday, November 7, 2025.
To watch in the U.S., people can sign up for Peacock:
Basic Plan: $7.99/month
Premium Plan: $10.99/month
Premium Plus (Ad-Free): $16.99/month
You can get a plan for the whole year if you want to pay for a year at once.
All Her Fault Cast and Characters
The series features a talented ensemble:
Sarah Snook as Marissa Irvine
Jake Lacy as Peter Irvine
Dakota Fanning as Jenny Kaminski
Michael Peña as Detective Alcaras
Sophia Lillis as Carrie Finch / Josephine Murphy
Abby Elliott as Lia Irvine
Daniel Monks as Brian Irvine
Jay Ellis as Colin Dobbs
Thomas Cocquerel as Richie Kaminski
Duke McCloud as Milo Irvine
Kartiah Vergara as Ana Garcia
Each actor puts real feeling into their part. This makes the show more exciting and keeps you interested in the story and choices people make.
Is All Her Fault Based on a True Story?
Yes — the story came from something that happened to Andrea Mara in real life. She went to pick up her child from a playdate. When she got there, she saw that the family was not living there anymore. This moment made her feel very uneasy. It gave her the idea for All Her Fault.
The novel mainly shows the emotional guilt and the way mothers feel judged. The TV version changes the story. It turns into a strong and exciting psychological thriller. Now, it is about lies, loss, and who you are.
Production and Themes of All Her Fault
The show was made by Megan Gallagher and produced by Joanna Strevens. It looks closely at the minds of parents. It shows what they fear and how they feel sad when something bad happens.
It’s not so much about solving a puzzle. It is more about knowing why people sometimes make sad choices when they feel very low.
The series shows how not telling the truth can break trust in families.It looks at how, when something bad happens, people in society usually blame mothers more than others.