2025 • TMDB 8.0 • 8 episodes • Mystery, Crime, Drama, Thriller
Overview
All Her Fault begins with every parent’s worst nightmare. In Chicago, working mother Marissa Irvine arrives at 14 Arthur Avenue to pick up her young son Milo from his first playdate at his new school — only to find that the woman who answers the door is not a mother she recognizes, is not the nanny, and does not have Milo. From that shattering opening, the miniseries spirals into a taut mystery about trust, privilege, and the secrets families keep from each other. As the police investigation deepens, suspicion falls in every direction: on Marissa and her husband Peter, on the glamorous neighbors, and on the people closest to the family. Based on the bestselling novel by Andrea Mara, the series unfolds across eight gripping episodes, each one peeling back another layer of deception. Sarah Snook delivers a powerhouse performance as a mother pushed to her limits, and the twists keep coming right up to the final episode. All Her Fault is a propulsive, binge-worthy thriller that asks how well you really know the people around you.
Creator and Main Cast
All Her Fault was created by Megan Gallagher. Sarah Snook stars as Marissa Irvine, the mother at the center of the mystery, opposite Jake Lacy as her husband Peter Irvine. The main cast also includes Sophia Lillis as Carrie Finch, Michael Peña as Detective Alcaras, Dakota Fanning as Jenny Kaminski, Abby Elliott as Lia Irvine, Jay Ellis as Colin Dobbs, and Duke McCloud as Milo Irvine. Each of the eight leads appears across all 8 episodes.
Seasons Snapshot
All Her Fault is a miniseries of 8 episodes. It premiered on November 7, 2025, and concluded with Episode 8 on December 26, 2025. The story is told as one complete arc, from Milo’s disappearance to the revelation of what really happened.
Why Watch All Her Fault?
All Her Fault is the kind of thriller that makes you say “just one more episode” until the credits roll on the finale. Its premise is instantly gripping, its Chicago setting feels rich and lived-in, and its ensemble cast is superb — Snook and Fanning in particular bring real depth to a story that could easily have been pure melodrama. The show is at its best when it turns the lens on its characters’ flaws, showing how guilt, ambition, and love can all lead good people to terrible decisions. If you like twisty domestic thrillers, this is essential viewing.
Trailer
Watch the official trailer on YouTube: All Her Fault | Official Trailer | Peacock Original
Where to Watch
In the US, All Her Fault streams on Peacock Premium. Availability was checked against JustWatch US listings on October 30, 2026, and may change over time.
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