All Her Fault Cast and Character Guide
All Her Fault is already the talk of the town on Peacock! This thrilling mystery-drama, adapted from Andrea Mara’s novel, premiered on November 6, 2025. The story follows Marissa Irvine, who faces a nightmare when her son Milo mysteriously disappears after a routine playdate.
Plot Overview
The series explores secrets, strained relationships, and harsh realities as parents confront who they truly trust with their children. The narrative revolves around Marissa and Peter Irvine’s family, with their lives intersecting unexpectedly with other characters.
Detective Alcaras leads the police investigation into Milo's disappearance. The show also focuses on school mothers and nannies connected to Milo, delving into how ordinary people handle extraordinary challenges.
Main Characters and Cast
- Marissa Irvine – A corporate mother living in Chicago, portrayed by Emmy-winning actress Sarah Snook.
- Peter Irvine – Marissa’s husband, involved in the unfolding drama.
- Detective Alcaras – The police officer investigating Milo’s case.
- Various school mothers and nannies connected to Milo’s life.
About Sarah Snook
Sarah Snook, who plays Marissa, earned an Emmy for her exceptional performance. She is best known for her role as Shiv Roy in Succession. Originally from Adelaide, Australia, Snook has also appeared in films such as Predestination (2014), Pieces of a Woman (2020), and Run Rabbit Run (2021).
"Every actor in All Her Fault brings subtlety and talent that make each twist engrossing and unpredictable."
The cast’s compelling performances power the series, making the suspense and emotional intensity resonate deeply with viewers.
All Her Fault uncovers the fragile trust among parents and those who care for their children, wrapped in a gripping narrative of mystery and drama.
Author’s summary: The series All Her Fault offers a tense exploration of trust and secrets among parents and caregivers, brought to life by a talented cast led by Emmy winner Sarah Snook.
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