🕯️All Her Fault (2025): Peacock’s Heart-Stopping Mystery Thriller — Release Date, Cast, Plot & Where to Watch

“One door. One question. Where is Milo?”

This November, Peacock invites viewers into a parent’s worst nightmare with All Her Fault, a haunting new mystery thriller starring Sarah Snook (Succession) and Dakota Fanning (The Watchers). Based on the bestselling novel by Andrea Mara, this gripping adaptation arrives November 6, 2025, with all eight episodes streaming exclusively on Peacock.

Created and written by Megan Gallagher, All Her Fault turns a simple suburban errand into a chilling spiral of secrets, lies, and the haunting realization that nothing — and no one — is as they seem.

👩‍👦 The Nightmare Begins — A Mother, A Door, and a Vanishing

It’s a quiet day in the Chicago suburbs when Marissa Irvine (Sarah Snook) drives to pick up her son, Milo, from his very first playdate. But when she knocks on the door, a stranger answers.

The woman standing there doesn’t know Maris. She’s never met Milo. And her child — the one Milo was supposed to be playing with — doesn’t even exist.

What follows is a parent’s descent into terror — a desperate search that unravels the perfect façade of suburban life. As hours turn into panic and panic into obsession, Marissa discovers that her world was never as safe as it looked.

“Every parent believes they know their child’s world,” Marissa says in one of the trailer’s most haunting lines. “Until the world stops knowing their child.”

🧩 A Web of Secrets — Beneath the Suburban Calm

All Her Fault doesn’t just tell a story of disappearance — it peels back the glossy layers of a community built on appearances. Each new clue Marissa uncovers leads to darker revelations: friendships hiding betrayals, marriages masking lies, and families built on dangerous secrets.

The mystery expands through multiple perspectives, forcing viewers to ask:Is this a kidnapping… or something far more personal?

🌪️ The Cast — A Stellar Ensemble of Suspense

Peacock’s latest thriller gathers a powerhouse cast that brings emotional depth and intensity to every frame:

🎭 Sarah Snook as Marissa Irvine — a devoted mother forced to confront her past and the fragile truth beneath her picture-perfect life.

🕯️ Dakota Fanning as Jenny, Marissa’s close friend whose loyalty may not be as pure as it seems.

🔍 Michael Peña as Detective McConville, leading the investigation into Milo’s disappearance.

💔 Jake Lacy (The White Lotus) as Peter, Marissa’s husband, whose silence raises more questions than answers.

💫 Sophia Lillis, Abby Elliott, Jay Ellis, and Thomas Cocquerel round out the cast — each playing a part in a puzzle where trust becomes a weapon.

Directed by Minkie Spiro (Downton Abbey) and Kate Dennis (The Handmaid’s Tale), the series promises a blend of sharp emotional storytelling and edge-of-your-seat suspense.

✍️ From Bestseller to Screen — The Andrea Mara Adaptation

Written by Irish author Andrea Mara, the 2021 novel All Her Fault became an international sensation for its razor-sharp twists and haunting realism. When Peacock announced its TV adaptation, Mara described the moment as “a dream come true” — especially upon learning that Sarah Snook would bring her complex protagonist to life.

Megan Gallagher’s adaptation keeps the story grounded while amplifying the tension, capturing what made the novel so irresistible: the terror of not knowing — and the danger of finding out.

📺 What to Expect — Every Parent’s Worst Fear Comes Alive

Set against the backdrop of Chicago’s quiet suburbs, All Her Fault uses its setting as a metaphor for the illusion of safety. Every pristine home hides something — and as Marissa’s investigation deepens, viewers will question every character’s motives.

The series promises:

• Eight tightly woven episodes of psychological suspense

• Nonlinear storytelling that reveals the truth piece by piece

• Emotional performances led by Sarah Snook and Dakota Fanning

• A haunting score and sharp cinematography that amplify the dread

🕰️ Release Details

📅 Premiere Date: November 6, 2025

📺 Where to Watch: Exclusively on Peacock

🎞️ Episodes: 8

🎬 Genre: Mystery • Thriller • Drama

🖋️ Created by: Megan Gallagher

📖 Based on: All Her Fault by Andrea Mara

💭 Final Thoughts — “It’s Not Just a Missing Child. It’s a Missing Truth.”

All Her Fault is more than a thriller — it’s an emotional dissection of fear, family, and the lies we tell to keep our worlds intact. With powerhouse performances and a mystery that unravels like a tightly wound clock, this is one of Peacock’s most anticipated originals of 2025.

“Every parent has that one fear,” Marissa whispers in the trailer. “I never thought mine would answer the door.”

Prepare for an unforgettable descent into paranoia, secrets, and heartbreak when All Her Fault streams November 6, only on Peacock.