All Her Fault is a Peacock limited thriller series (eight episodes) about a wealthy Chicago family whose five-year-old son, Milo, goes missing on a playdate, triggering a tense, twist-filled investigation about who is really to blame and why the family’s secrets matter. The show blends psychological suspense with a family drama lens, focusing on the pressures and blame placed on working mothers in modern life. Key elements you might be wondering about:

• Core mystery: Milo’s disappearance at his playdate sets off a race to find him and answers about what happened that day, including who might have staged events around Milo’s custody and safety.
• Primary characters: Marissa Irvine, Milo’s mother, and Peter Irvine, Milo’s father, anchor the story. Other central figures include the families, caregivers, and a network of people connected to Milo’s world, each with their own motives and secrets.
• Thematic focus: The title signals how blame is allocated—often toward women balancing career and family—while the narrative interrogates truth, manipulation, and the cost of keeping up appearances.
• Tone and style: The series employs a noir-tinged, twisty tone with multiple viewpoints and shifting timelines, designed to keep viewers reconsidering who’s trustworthy and what counts as “fault.”
• Ending and resolution: As with many modern thrillers, the finale ties together multiple threads about deception, accountability, and the consequences of the characters’ choices, though viewers may find the conclusions provocative or open to interpretation depending on which threads they find most compelling.

If you’d like, I can tailor this summary to what you’re curious about—theme analysis, character dynamics, how it compares to similar “rich mom mystery” stories, or a spoiler-light recap of the season finale.