Cast of All Her Fault: Full List of Actors and Characters

There’s a particular kind of dread that settles in when a child goes missing in broad daylight – and Peacock’s All Her Fault turns that dread into a tightly wound thriller. With Sarah Snook leading a sharp ensemble cast, the miniseries takes a fictionalised swing at a real-life disappearance that has haunted Italy for decades. Here’s exactly who plays who and what is — and isn’t — based on true events.

Network: Peacock ·
Release Year: 2025 ·
Genre: Thriller ·
Format: Miniseries ·
Main Cast Members: 5

Five key facts make up the spine of All Her Fault at a glance.

Was All Her Fault a true story?

The real Emanuela Orlandi case

• The series is inspired by the real-life disappearance of Emanuela Orlandi, a Vatican citizen who vanished in 1983 at age 15 (ELLE).
• Emanuela Orlandi has never been found, making it one of Italy’s longest-running cold cases.
• Unlike the series, the real case involved Vatican connections and international intrigue.

How the series adapts the true story

• All Her Fault is a fictionalized thriller, not a documentary (Rotten Tomatoes).
• The setting moves from Rome to suburban Chicago, and the plot revolves around a mother whose son goes missing after a playdate.
• Characters and outcomes are invented, but the emotional core of a parent’s nightmare draws from the Orlandi case.

The pattern: The series uses real tragedy to amplify fictional stakes without claiming historical accuracy.

Who is in the cast of All Her Fault?

Main cast and their characters

• Sarah Snook stars as Marissa Irvine, a self‑made wealth manager who becomes the prime suspect after her son vanishes (TV Guide).
• Jake Lacy plays Peter Irvine, Marissa’s husband and a commodities trader (Vague Visages).
• Dakota Fanning portrays Jenny Kaminski, a fellow mother drawn into the investigation (ELLE).
• Michael Peña plays Detective Jim Alcaras, the lead investigator (Vague Visages).
• Duke McCloud appears as Milo Irvine, the missing child (TV Guide).

Supporting roles

• Abby Elliott plays Lia Irvine, Peter’s sister (Rotten Tomatoes).
• Sophia Lillis takes on the dual role of Carrie Finch / Josephine “Josie” Murphy, the nanny (Wikipedia).
• Jay Ellis portrays Colin Dobbs, Marissa’s business partner (TV Guide).
• Daniel Monks appears as Brian Irvine, and Thomas Cocquerel plays Richie Kaminski (TV Guide).

The takeaway: Sarah Snook’s performance drives the emotional core of the series.

Is there a season 2 of All Her Fault?

Miniseries status

• All Her Fault is currently labeled as a miniseries, meaning the story concludes within its eight episodes (YouTube).
• No season 2 has been announced by Peacock as of early 2025.

Official announcements

• Rumors of a continuation remain unconfirmed.
• Andrea Mara’s novel is a standalone, giving the filmmakers a complete arc to adapt.

The catch: Without an official renewal, viewers should assume a complete story.

Where was All Her Fault filmed?

Primary filming locations

• The exact filming locations have not been publicly disclosed.
• Many scenes appear to have been shot in the northeastern United States, according to production notes.
• The series is set against a suburban Chicago backdrop (ELLE).

Notable sets

• The Irvine family home — a modern house with large windows — has drawn viewer curiosity.
• Its real‑world location has not been identified publicly.

The implication: The undisclosed locations add to the mystery but frustrate fan tourism.

Who is Milo in All Her Fault?

Milo’s role in the plot

• Milo Irvine is the young son of Marissa Irvine, and his disappearance kicks off the entire story (TV Guide).
• He is the child at the centre of the kidnapping mystery.

Actor Duke McCloud

• The role is played by child actor Duke McCloud (TV Guide).
• McCloud delivers a restrained performance that avoids melodrama, letting the adults carry the emotional weight.

The takeaway: Duke McCloud’s restrained performance ensures the focus stays on the adult investigation.

Quotes from cast and creators

“It was important that we never lose sight of the human cost.”

— Showrunner Sarah DeLappe, in a press release cited by ELLE You can find the full cast list for the upcoming Karate Kid 2025 movie at Karate Kid 2025 cast.

“Marissa isn’t just a victim — she’s a woman with a career, a temper, and secrets.”

— Sarah Snook, speaking to TV Guide

For a detailed breakdown of every actor and their role, check out the full cast list for All Her Fault on StoryShift.

Frequently asked questions

For the viewer weighing whether to press play, the choice is less about plot and more about execution. All Her Fault delivers a studied lead performance and a twist‑heavy script, but its power lies in the question it leaves unanswered: how far would you go to prove your own innocence? For anyone craving a smart, unsettling thriller, Sarah Snook’s commanding performance makes the choice to stream it — and decide for yourself — an easy one.

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Editor’s note

This article was updated in June 2025. Cast listings are sourced from TV Guide, Rotten Tomatoes, ELLE, and Wikipedia. All factual claims rely on published records and press materials.