The All Her Fault cast is taking center stage as Peacock releases its newest mystery-drama series, All Her Fault, on November 6, 2025. The highly anticipated adaptation of Andrea Mara’s bestselling novel features an exceptional ensemble led by Sarah Snook, known globally for her award-winning role in Succession. Alongside Snook are Jake Lacy, Dakota Fanning, and Michael Peña, creating a lineup that blends emotional intensity, suspense, and raw realism.
The series follows a mother’s nightmare that begins with an ordinary school pickup gone wrong — and spirals into a web of lies, deceit, and buried secrets. With its haunting tone and layered performances, All Her Fault is shaping up to be one of the most gripping thrillers of 2025.
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Sarah Snook Leads the All Her Fault Cast as Marissa Irvine
At the heart of All Her Fault is Sarah Snook, playing Marissa Irvine, a devoted mother whose life takes a terrifying turn when she arrives at a house to collect her son — only to find that no one there knows who she is or where her child might be.
Snook delivers a commanding performance, portraying Marissa’s unraveling psyche with the same emotional precision that earned her critical acclaim in Succession. Her portrayal captures the raw fear and desperation of a parent caught in an unthinkable situation, grounding the show’s mystery in authentic human emotion.
Jake Lacy as Peter Irvine — The Husband With Secrets
Jake Lacy joins the All Her Fault cast as Peter Irvine, Marissa’s husband. His character appears supportive and loving at first but grows increasingly suspicious as the mystery deepens. Lacy, known for his performances in The White Lotus and A Friend of the Family, brings complexity to Peter’s role, portraying a man torn between protecting his family and concealing secrets that could destroy them.
Peter’s character becomes a focal point of tension — leaving audiences questioning whether he’s a victim, a liar, or something far more dangerous.
Dakota Fanning as Jenny Kaminski — The Friend or Foe?
Dakota Fanning plays Jenny Kaminski, Marissa’s close friend whose comforting presence masks an underlying unease. Jenny is warm, helpful, and understanding — until she isn’t. As Marissa’s world collapses, Jenny’s actions become increasingly unpredictable, forcing viewers to question her loyalty and motives.
Fanning’s performance adds a haunting subtlety to the narrative. Her chemistry with Snook forms one of the show’s most compelling dynamics — a friendship defined by empathy, envy, and quiet manipulation.
Michael Peña as Detective Alcaras — The Relentless Investigator
Rounding out the principal All Her Fault cast, Michael Peña portrays Detective Alcaras, a seasoned investigator leading the missing child case. Peña delivers a grounded, empathetic performance that provides balance to the emotionally charged story.
As he digs deeper into the disappearance, Detective Alcaras becomes the bridge between the audience and the puzzle at hand — revealing truths that challenge every assumption. Peña’s calm authority contrasts with the chaos surrounding Marissa, offering moments of restraint amid the growing hysteria.
Supporting Cast: Strong Performances Across the Board
The All Her Fault cast features a talented supporting lineup that strengthens the series’ emotional impact.
- Abby Elliott as Lia Irvine – Peter’s sister, whose loyalty is tested as family secrets emerge.
- Jay Ellis as Colin Dobbs – Marissa’s colleague, who may know more about her family than he admits.
- Duke McCloud as Milo Irvine – Marissa’s missing son, whose disappearance drives the story forward.
- Emma Booth as Detective Hughes – Alcaras’s skeptical partner, whose instincts add new layers to the investigation.
Each supporting character contributes meaningfully to the show’s tension-filled environment, ensuring no one feels unnecessary or one-dimensional.
About the Series: A Faithful Adaptation with Modern Thrills
Based on Andrea Mara’s international bestseller, All Her Fault is a faithful yet fresh adaptation. The story examines how quickly trust collapses under pressure and how perception can be manipulated by fear.
The series spans eight episodes, each running approximately 50 minutes. It’s filmed in Melbourne, Australia, with the city doubling for suburban America. The show’s cinematography captures both the claustrophobia of family secrets and the wide, haunting stillness of the unknown.
Showrunner Megan Gallagher directs a tone that blends slow-burn suspense with emotional realism. The narrative keeps viewers guessing until the final episode — a hallmark of quality psychological thrillers.
Why the Cast Elevates All Her Fault
Casting is central to All Her Fault’s success. Sarah Snook’s casting alone drew major attention when announced, signaling that Peacock was aiming for prestige-level storytelling.
The chemistry between Snook and Fanning is one of the series’ most significant assets. Their scenes oscillate between warmth and tension, underscoring the show’s central question: how well do we ever know those closest to us?
Jake Lacy’s understated menace contrasts beautifully with Peña’s steady professionalism, creating a moral and emotional balance that keeps the audience invested. Each actor serves a purpose — and the cast’s collective strength elevates All Her Fault beyond the confines of typical mystery-drama.
Early Reception and Buzz
Even before its official premiere, All Her Fault generated strong buzz across social media and entertainment circles. Early preview screenings have praised the show’s performances, particularly Sarah Snook’s portrayal of Marissa. Critics have noted her ability to capture both maternal warmth and psychological collapse in a way that feels raw and relatable.
Viewers are also anticipating Dakota Fanning’s return to dramatic television, marking one of her most mature and layered roles to date. Her performance reportedly delivers several of the series’ most shocking moments.
Peacock is positioning All Her Fault as one of its flagship fall titles, following the success of The Resort and Dr. Death. The All Her Fault cast is expected to draw both thriller fans and general audiences seeking high-caliber acting and storytelling.
Episode Count and Streaming Information
For those planning to watch tonight:
- Platform: Peacock (available to U.S. subscribers)
- Episodes: 8 total
- Release Date: November 6, 2025
- Run Time: ~50 minutes each
- Rating: TV-MA for mature themes, language, and intense scenes
All episodes are available for streaming immediately, allowing viewers to binge the series or savor it over several nights.
Themes Explored by the Cast
Throughout All Her Fault, the cast explores deeper emotional and social themes, including:
- The fragility of trust between spouses and friends.
- The fear every parent faces when their child’s safety is threatened.
- How trauma exposes hidden truths and redefines relationships.
- The clash between personal guilt and public perception.
These themes are brought to life through intimate performances rather than flashy twists, making the drama both thought-provoking and emotionally gripping.
Final Thoughts on the All Her Fault Cast
The All Her Fault cast stands as one of the most powerful ensembles in current television. Sarah Snook’s commanding lead, Jake Lacy’s quiet intensity, Dakota Fanning’s enigmatic charm, and Michael Peña’s grounded strength combine to create a thriller that’s as emotionally rich as it is suspenseful.
The adaptation’s success rests on the performances—and this cast delivers at every level, ensuring that viewers are pulled deeper into its mystery with each passing episode.
Watch the All Her Fault cast in action on Peacock now, and share which performance left you most stunned in the comments below.