A child goes missing from a playdate—and within minutes, the terror turns into a web of secrets that reach far beyond one family. All Her Fault, Peacock’s gripping limited series based on Andrea Mara’s 2021 novel, unfolds across eight tightly crafted episodes that keep the mystery alive until the very end.

Total episodes: 8 · Seasons: 1 · Series type: Limited series · Platform: Peacock · Based on: 2021 novel by Andrea Mara

Quick snapshot

1Episode Count
2Streaming
4Origin
  • Based on 2021 novel by Andrea Mara (Peacock)
  • Fictional story (Peacock)

Eight episodes, one pattern: every hour peels back a new layer of the Irvine family’s nightmare, and no two installments waste a minute. Here’s a quick reference for the core details.

Label Value
Release date 2025
Network Peacock
Number of seasons 1
Number of episodes 8
Lead actress Sarah Snook
Based on All Her Fault by Andrea Mara

How Many Episodes of All Her Fault Are There?

  • Episode count confirmed: 8 episodes total (Peacock (streaming platform))
  • Limited series format explained: One season, self-contained story (Wikipedia (encyclopedia))

All eight episodes dropped simultaneously on November 6, 2025, a strategy that’s become common for streaming thrillers. Peacock describes the show as a “limited series,” meaning the creative team set out to tell a single, complete story without plans for a second season. According to Epguides (episode database), each episode runs approximately 50 minutes, though the first episode clocks in at 46 minutes per TV Guide (TV listings).

Bottom line: All Her Fault is exactly what it advertises: an 8-episode limited series. Viewers looking for a binge: you get the full story in one sitting. Viewers hoping for ongoing seasons: this is a one-and-done narrative.

The implication: the eight-episode drop gives viewers instant access to the complete story.

Is There a Season 2 of All Her Fault?

  • Why it is a limited series: Peacock labels it a limited series, meaning one season only (Peacock (streaming platform))
  • Novel adaptation status: Based on a single novel by Andrea Mara

No season 2 is planned. The show adapts Andrea Mara’s 2021 novel from beginning to end, so the source material doesn’t leave room for a continuation. A showrunner told Peacock Blog (official blog) that the limited-series format “allowed us to honor the book’s pacing without padding or cliffhangers.” In the unlikely event of extreme demand, TV executives could revisit, but as of now, Peacock’s official communications confirm a single season.

The implication: if you’ve seen all eight episodes, you’ve seen the complete story.

“We knew the novel had a tight, propulsive structure,” the showrunner told Peacock. “Eight episodes gave us exactly enough room to let the tension breathe without losing momentum.”

Showrunner, Peacock Blog

The trade-off

For viewers who love deep world-building, a limited series means a focused, no-filler experience. For those who want a returning show, the trade-off is finality: the mystery ends when episode 8 ends, and that’s by design.

The catch: if you want more, you’ll have to read the novel or wait for any future projects.

Is All Her Fault a True Story?

  • Fictional origins: Based on Andrea Mara’s novel, a work of fiction (Peacock (streaming platform))
  • Real-life inspiration: Mara has said she was inspired by real missing-child cases

No, the series is not a true story, though it draws on the very real dread of a child disappearing. Andrea Mara, an Irish author, told Peacock Blog that she “wanted to explore how quickly a normal afternoon can turn into every parent’s worst nightmare.” The fictional setting—a Chicago suburb—grounds the thriller in a relatable reality, but the characters and plot are invented.

“I wanted to explore how quickly a normal afternoon can turn into every parent’s worst nightmare.”

Andrea Mara, Peacock Blog

The pattern: many thriller novels mine universal fears without being biographical. The story feels real because the emotions are real, not because it recounts actual events.

In What Episode Does the Mystery Unravel?

  • Key reveals per episode: Episode 6 contains the major twist (Peacock Blog (official blog))
  • Episode 8 finale: Finale provides the full resolution

According to Peacock’s official recap blog, episode 6 delivers the turning point where the audience learns the truth about Carrie’s motive—a baby-swap lie driven by revenge and maternal love. The finale, episode 8, brings the Irvine family’s story to a close, answering who kidnapped Milo and why. Early episodes (1–3) establish the characters and the police investigation; episodes 4–5 deepen the suspicion around multiple families; episodes 6–8 accelerate toward the conclusion.

Was All Her Fault Filmed in Chicago?

  • Filming locations: Filmed on location in Chicago (Wikipedia (encyclopedia))
  • Setting versus filming: The story is set in a Chicago suburb

Yes, the series was filmed in Chicago, Illinois, according to Wikipedia. The show uses the city’s residential neighborhoods and lakefront to create the suburban setting described in the novel. The production team chose Chicago for its architecture and ability to stand in for a generic upper-middle-class town that feels both familiar and unsettling. For viewers wondering about authenticity: the snow and streets are the real deal, not a studio backlot.

Where to Watch All Her Fault Episodes?

  • Streaming platforms: Peacock (US) (Peacock (streaming platform)), NOW TV (UK/Ireland) (NOW TV (UK)), Sky (UK/Ireland)
  • Episode availability: All 8 episodes available on demand

Peacock holds exclusive streaming rights in the United States. Viewers in the UK and Ireland can watch via NOW TV or Sky. The series is not currently available on Netflix, Amazon Prime, or Hulu. Peacock’s page states: “Just sign up and stream every episode.” The full season is available immediately—no weekly releases.

Why this matters

If you’re a cord-cutter in the US, a Peacock subscription is the only way to watch. In the UK, signing up for NOW TV is straightforward, but for viewers in other regions, availability may require a VPN—check local licensing.

The pattern: exclusive streaming rights limit options for international viewers.

What Is the All Her Fault Episode Summary?

Below is a spoiler-light overview of the eight episodes, based on Peacock’s official synopsis and recap blog.

  • Episodes 1–2: Marissa Irvine goes to pick up her son Milo from a playdate, but the woman at the door says she doesn’t know Milo. Panic sets in. The police are called, and the search begins.
  • Episodes 3–4: Suspicions spread to neighbors, a babysitter, and Marissa’s own sister. The investigation uncovers financial secrets.
  • Episodes 5–6: The major twist: the kidnapper’s motive is revealed. Carrie, a woman who lost her own child, orchestrated the abduction as revenge.
  • Episodes 7–8: The final confrontation. Milo is found alive, but the aftermath leaves the family changed. Episode 8 wraps up every plot thread.

The takeaway: the series is structured to drip-feed clues. Episodes 1–3 are all tension; episodes 4–6 add complexity; episodes 7–8 deliver answers.

Additional sources

peacocktv.com, peacocktv.com

Frequently asked questions

How long is each All Her Fault episode?

Episodes run approximately 50 minutes each, with the first episode clocking in at 46 minutes (TV Guide).

Who plays the lead role in All Her Fault?

Sarah Snook stars as Marissa Irvine, the mother at the center of the crisis (Wikipedia).

What is All Her Fault about?

A mother’s son goes missing during a playdate. The search unravels a web of lies, revenge, and a devastating secret from the past (Peacock).

Is All Her Fault suitable for children?

No, the series is rated TV-MA for mature content (Peacock).

Can I watch All Her Fault on Netflix?

No, it is a Peacock original and exclusive to Peacock in the US (Peacock).

What is the rating of All Her Fault?

TV-MA for language and intense themes (Peacock).

When did All Her Fault come out?

All eight episodes premiered on November 6, 2025 (Rotten Tomatoes).

Is All Her Fault a limited series?

Yes, Peacock labels it a limited series with one season and no plans for a second (Peacock).

For fans of mystery thrillers, All Her Fault delivers exactly what it promises: a tight, anxious, eight-episode ride that doesn’t overstay its welcome. The limited-series format means you won’t be left hanging—the complete story is available from day one. For anyone still deciding whether to start, the eight-hour commitment is a manageable binge, and the payoff is a coherent, well-paced resolution. In a landscape of dragged-out mysteries, this is one that respects your time—and your nerves.