All Her Fault Cast and Character Guide
All Her Fault has quickly become a popular series on Peacock. This gripping mystery-drama, adapted from Andrea Mara's novel, premiered on November 6, 2025. It follows Marissa Irvine's desperate search after her son Milo disappears following a routine playdate.
Plot Overview
The story revolves around Marissa and Peter Irvine’s family and other intertwined characters. As the investigation unfolds, secrets emerge, relationships are challenged, and harsh truths about the people trusted with children come to light.
"Not only does every actor in All Her Fault get their time to shine, but also, during the process, secrets are uncovered, relationships are put to the test, and parents get harsh realities about the people they trust with their kids."
Key Characters
- Marissa Irvine – A corporate mother living in Chicago, who faces terrifying uncertainty when her son vanishes.
- Peter Irvine – Marissa’s husband, deeply involved in the unfolding drama.
- Detective Alcaras – The police investigator looking into the lives connected to Milo’s disappearance.
- Other important roles include school mothers and nannies within Milo’s life circle.
Acting and Performances
The actors bring this tense story to life with remarkable skill and subtlety, heightening every twist and making the series unpredictable and engaging.
"The actors are the ones who give life to this tense scenario with their impressive talent and subtlety, thus making every twist in All Her Fault engrossing and unpredictable."
About Sarah Snook
Sarah Snook portrays Marissa Irvine. The Emmy-winning Australian actress gained acclaim for her role as Shiv Roy in Succession. Born in Adelaide, she has starred in films such as Predestination (2014), Pieces of a Woman (2020), and Run Rabbit Run (2021).
"Marissa Irvine, a corporate mom living in Chicago, is the terrified parent of the Emmy-winning actress Sarah Snook, who was awarded the prize for her outstanding acting performance and who played Shiv Roy in Succession."
All Her Fault explores how ordinary individuals confront extraordinary challenges, made gripping by a talented cast and a suspenseful storyline.
Author’s summary: The series "All Her Fault" combines intense drama with strong performances to reveal the fragile truths behind a child's disappearance and the hidden secrets of those involved.