All Her Fault Cast and Character Guide
The Peacock mystery-drama All Her Fault, based on Andrea Mara’s novel, premiered on November 6, 2025. The series quickly caught viewers' attention with its gripping storyline, where Marissa Irvine’s ordinary day turns into a nightmare when her son Milo vanishes after a routine playdate.
Story Overview
The plot focuses on Marissa and Peter Irvine as they confront frightening truths about trust and community. Detective Alcaras leads the investigation, delving into the lives of the parents, nannies, and school mothers connected to Milo. Each episode unravels new secrets, testing relationships and exposing hidden sides of seemingly ordinary people.
Main Characters
- Marissa Irvine – A corporate mother from Chicago, portrayed by Sarah Snook.
- Peter Irvine – Marissa’s husband, who struggles to hold the family together.
- Detective Alcaras – A committed investigator determined to uncover the truth.
Sarah Snook
Sarah Snook, an Emmy-winning actress recognized for her portrayal of Shiv Roy in Succession, brings emotional depth to Marissa Irvine. Born in Adelaide, Australia, she has appeared in Predestination (2014), Pieces of a Woman (2020), and Run Rabbit Run (2021).
Performance and Themes
The ensemble cast delivers intense, nuanced performances that make each shocking turn believable. The series highlights how everyday families can be thrust into extraordinary crises where love, fear, and trust collide.
Author’s Summary
A tense and emotional thriller, All Her Fault reveals how one family’s nightmare exposes the quiet fractures within a community built on trust and secrets.