All Her Fault, the latest Peacock miniseries, stars Sarah Snook in a chilling psychological thriller that plunges viewers into the emotional turmoil following the disappearance of a young child. Based on Andrea Mara’s 2021 novel and adapted by Megan Gallagher, this eight-episode drama captures the escalating tension and devastating secrets within a wealthy Chicago family. Snook portrays Marissa Irvine, a mother whose worst nightmare begins when she discovers her 5-year-old son Milo is missing after a supposed playdate — a playdate that never actually existed.
This haunting series explores more than a kidnapping. The disappearance sets off a chain reaction, unraveling the complex web of lies and betrayals surrounding the Irvine family. The story reveals deeper wounds as Marissa’s husband Peter (Jake Lacy) admits to a dark secret: he swapped their newborn son with another’s after a tragic car accident years ago. This revelation throws into question Milo’s identity and adds layers of deceit and desperation to Marissa’s frantic search.
The blame game has begun. #AllHerFault is streaming now on Peacock. pic.twitter.com/kvtZqmVhq6
— Peacock (@peacock) November 6, 2025
The psychological complexity of All Her Fault lies in its intense portrayal of motherhood under pressure and the ripple effects of old family trauma. Peter’s siblings, Lia and Brian, harbor their own tragic histories tied to childhood accidents and longstanding resentments, compounding the emotional stakes. Lia struggles with addiction, Brian battles depression and chronic pain, and both depend heavily on Peter’s support. The family dynamics highlight how past sins shape the present in cruel and unexpected ways.
📺 Yeni Dizi
Sarah Snook ve Dakota Fanning'in başrolde olduğu "ALL HER FAULT"
Marissa, oğlunu bir oyun etkinliğinden almaya gider. Kapıyı açan tanımadığı bir kadın "oğlun yok" demesiyle kabus başlar.
6 Kasım'da PEACOCK'ta pic.twitter.com/PYZVeG06Yv— TV Dosyası (@tvdosyasi) November 2, 2025
The show also centers around Carrie (Sophia Lillis), a mentally unstable nanny linked to Milo’s kidnapping, whose motivations blur the lines between villain and tragic figure. The revelation of her identity and connection to the child brings forward issues of mental health and desperation within the thriller’s framework.
One of the most gripping moments is the finale twist, where Marissa, trapped in a moral no-man’s land, uses Peter’s severe allergy to soy to orchestrate his death. By sabotaging his EpiPen and orchestrating an allergic reaction, she removes the threat he poses to her and Milo. The show ends on a powerful matriarchal note, with Marissa and her friend Jenny (Dakota Fanning) finding quiet strength watching their sons play together, symbolizing survival and resilience amid chaos.
Sarah Snook’s performance stands out, capturing every nuance of fear, anger, and determination with haunting authenticity. Previously acclaimed for her role as Shiv Roy in Succession, Snook dives into this thriller’s intense emotional landscape and delivers a career-defining performance. The supporting cast, including Dakota Fanning, Michael Peña, Jake Lacy, and Sophia Lillis, all bring depth to their roles, enriching the tangled narrative.
All Her Fault examines the consequences of choices, the nature of guilt, and the struggle to protect family at any cost. It asks difficult questions about blame and responsibility, especially in the high-pressure world of modern motherhood. The series explores how societal expectations weigh heavily on women, often amplifying guilt and judgment when disaster strikes.
Despite some critique of pacing and plot devices, All Her Fault is a compelling addition to the psychological thriller genre, combining suspense, emotional drama, and social commentary. It resonates with viewers who appreciate layered storytelling and complex characters facing impossible dilemmas.