All Her Fault: Sarah Snook on Playing a Successful Mom's Worst Nightmare
Sarah Snook, known for her role in Succession, stars in Peacock’s gripping thriller All Her Fault, adapted from Andrea Mara’s bestseller. The eight-episode series, which premiered on November 6, 2025, centers on Marissa, a self-made wealth manager whose young son, Milo, mysteriously disappears during a playdate.
Marissa and her husband, Peter (played by Jake Lacy from Apples Never Fall), initially believe Milo is still with his classmate, but when Marissa goes to pick him up, she finds him missing. Snook, who also serves as an executive producer, recently spoke at a press conference about the emotional challenges of portraying such a traumatic event.
Portraying Emotional Reality
“It is high drama, but like getting into this hysterical, histrionic overreacting … like finding the kernel of truth in these things. Like, ‘What is it like to have your child go missing? What is that like?’ For this person like that, that was the hardest thing to constantly make sure that we were delving down into what is the truthful version of this.”
Snook explained how deeply she had to engage with the role:
“We’re during the first read through and I write on the first page: ‘Must find different ways to cry.’ Because I was crying all the time, dealing with what’s happening. Finding different levels of like, ‘Okay, this is level 10.'”
Series Details
- Title: All Her Fault
- Platform: Peacock
- Episodes: Eight
- Premiere Date: November 6, 2025
- Based on Andrea Mara’s bestseller
- Main Cast: Sarah Snook (Marissa), Jake Lacy (Peter)
The series explores the intense emotional turmoil of a family coping with the sudden disappearance of a child, led by Snook’s nuanced and powerful performance.
Author’s summary: Sarah Snook delivers a deeply emotional and nuanced portrayal of a mother’s nightmare in Peacock’s thriller All Her Fault, highlighting the raw trauma behind a child’s disappearance.