All Her Fault Ending Explained: The Truth Behind Carrie Finch and Milo Irvine
The Peacock series All Her Fault has captured global attention with its shocking twists, complex emotions, and a haunting finale that left viewers questioning what it truly means to be a parent. Starring Sarah Snook as Marissa Irvine, the thriller explores motherhood, guilt, and obsession in ways that few dramas dare to go. But as the final episode dropped, fans were left asking the same question — what really happened to Carrie and Milo?
Let’s break down the ending, the hidden truths, and what it all means.
🎬 The Mysterious Disappearance
The story begins when Marissa Irvine arrives to pick up her son Milo after a playdate, only to discover that the address she’s been given doesn’t exist — and Milo has vanished. What follows is a frantic search through layers of lies, secrets, and emotional trauma.
As suspicion grows, viewers are introduced to Carrie Finch, a nanny who at first seems like a victim of circumstance. But behind her gentle exterior lies a much darker past and a heartbreaking motive.
🧩 The Truth Behind Carrie Finch
Carrie Finch, whose real name is Josephine Murphy, is not who she claims to be. Years before the events of the series, Josephine lost her baby in a devastating car crash. That same crash involved Marissa and her husband Peter Irvine, a fact that comes to light much later.
Here’s the twist that changes everything — Peter secretly swapped the babies after the accident. The Irvines’ child had died in the crash, but Josephine’s baby survived. Peter, terrified of losing Marissa, made the unthinkable choice: he took Josephine’s baby and raised him as Milo.
That means the child Marissa has loved and raised for years — Milo — is actually Josephine’s biological son.
💔 The Emotional Confrontation
When Carrie (Josephine) learns the truth, her grief turns into obsession. She plans Milo’s kidnapping, determined to reclaim the child she believes was stolen from her. What could have been a simple act of revenge becomes a desperate plea from a mother who never healed.
The emotional climax unfolds when Carrie confronts Marissa and Peter, demanding the truth. The situation spirals out of control, and in a moment of chaos, Peter shoots Carrie, fatally wounding her. Before dying, Carrie whispers the words that linger with Marissa forever: “He’s my son.”
⚖️ Justice and Revenge
After the tragedy, the truth about the baby swap finally surfaces. Peter admits his role in the deception, but rather than turning him in, Marissa takes justice into her own hands. In a quietly chilling scene, she tampers with Peter’s EpiPen, ensuring it will fail during his next allergic reaction. When the moment comes, Peter dies — his guilt catching up to him in the most poetic way possible.
Marissa walks away free, her secret buried with him.
🧠 What It All Means
The ending of All Her Fault isn’t just about the resolution of a crime — it’s a meditation on motherhood, loss, and identity.
- Who is the real mother? Is it the woman who gave birth or the one who raised the child?
- What does justice look like when truth and love collide?
- Can redemption exist after a lifetime built on lies?
Marissa chooses to protect her son, even if that means living with the guilt of two deaths. Milo, blissfully unaware of his true origins, becomes the symbol of both tragedy and rebirth.
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🏡 The Final Scene
The series ends with Marissa and her friend Jenny watching their children — including Milo — playing peacefully in a sunlit yard. The scene looks normal, even serene, but it carries a quiet unease. Viewers know the truth that lies beneath the surface — a family rebuilt on secrets.
It’s a haunting conclusion that reminds us how fragile love can be when built on deception.
💬 Themes You Might Have Missed
- Motherhood and Morality: The show questions what it means to be a “good mother” when love and truth are in conflict.
- Power and Privilege: Marissa’s ability to hide her crime shows how wealth and influence can reshape justice.
- Identity and Healing: Carrie’s story is tragic but deeply human — a portrait of a woman broken by grief and desperate for closure.
❓ FAQs About “All Her Fault”
Q1. Who is the real mother of Milo Irvine?
Milo is the biological son of Josephine Murphy (Carrie Finch), but he was raised by Marissa after Peter swapped the babies.
Q2. Does Carrie die at the end?
Yes. She is shot during a confrontation with Peter Irvine and dies shortly after revealing the truth.
Q3. What happens to Peter?
Peter dies later from a fatal allergic reaction after Marissa deliberately lets his EpiPen expire.
Q4. Is Milo aware of the truth?
No. Milo remains unaware that Marissa is not his biological mother.
Q5. What message does the ending convey?
The finale explores how truth, guilt, and love intertwine — showing that sometimes, peace comes at a devastating price.
🌟 Final Thoughts
All Her Fault is more than a mystery — it’s a study of love’s dangerous extremes. Through Marissa’s desperate choices and Carrie’s tragic obsession, the series asks a timeless question: How far would you go to protect the one you love?
With its powerful performances and thought-provoking ending, All Her Fault cements itself as one of the most gripping psychological thrillers of the year — a story that lingers long after the final scene fades to black.