All Her Fault Episode 1 recap: A playdate gone wrong sparks a chilling mystery

All Her Fault is a mystery thriller miniseries that premiered on Peacock on November 6, 2025.

It is an adaptation of the book by Andrea Mara and introduces Sarah Snook as Marissa Irvine, an ordinary mother whose life turns upside down when her son Milo, who is only five years old, vanishes during a supposedly normal playdate. The drama lays bare the family secrets, identity issues, lies, and the complicated, heart-wrenching decisions a parent must make when their worst fear comes true.

Marissa is desperate to track down Milo, but the address she got for the playdate? Turns out, it’s fake. That is when everything starts to unravel. Suddenly, Peter, her husband, gets pulled in, along with his sister Lia, who he barely talks to, their nanny Ana, and a bunch of friends from work and school.

The whole thing in All Her Fault spins out fast, packed with surprises. The first episode drops you right into the chaos, full of real emotion and tension. You meet this whole cast of characters, each hiding something, and you just know things are about to get even more complicated.

All Her Fault Episode 1 recap

All Her Fault jumps right into the thick of things. Marissa Irvine thinks she is just running a quick errand, as she is off to pick up her son, Milo, after a playdate at Jenny’s house. But when she rings the bell, a stranger named Esther answers the door. Esther has never heard of Milo, and Jenny’s name means nothing to her. Marissa checks her phone, confused. That is definitely the address Jenny sent, right? Except now she is not so sure who has really been texting her.

Things start to fall apart. Marissa tries calling her nanny, Ana, but can’t get through, as Ana is supposed to be out of town anyway. Then she reaches Jenny, who is just as shocked. Someone has been impersonating her, sending Marissa messages she never wrote. And that is when Panic sets in.

Marissa races home, desperate to see if Milo somehow made it back on his own. However, she just finds her husband Peter, his brother Brian, and no sign of Milo anywhere. The police get involved. Marissa goes over her morning, admitting to everyone she never saved Jenny’s number, and she just assumed the invitation was real. Now, everything she trusted feels upside down.

Jenny really doesn’t want to get involved, but she gets dragged in anyway. She is already swamped, trying to balance her job in publishing and raising her son, Jacob. She keeps telling everyone she never set up any playdate. Still, memories start popping up: like that first time she met Marissa at a school event, when both of them already felt the weight of the school-parent crowd breathing down their necks.

Then things start to unravel. Someone finds Milo’s backpack tracker, smashed and tossed behind the school. The real shock comes after a few phone calls to his teacher: Milo didn’t just wander off. Carrie Finch, the nanny working for Jenny, signed him out. Carrie has only been part of Jenny’s life for a few months. She always seemed trustworthy enough, but now, looking back, a bunch of little things suddenly don’t feel so harmless.

Ana finally walks in, looking just as lost as the rest of them. The police collect her phone, which was sitting out on the Irvines’ patio, which only makes things weirder. At the same time, Marissa and Peter can barely look at each other. Guilt is eating at them, fear is right there too, and now their marriage is just another thing ready to snap.

The first episode of All Her Fault leaves you with two big moments. First, detectives figure out that Carrie didn’t just act on a whim; she actually planned to take Milo out of school. That changes everything. Then there is a flash-forward, 27 days later. The investigation has gotten way bigger, reaching deep into both families. And someone in the circle has ended up dead. So it’s not just a kidnapping anymore; there is a whole mess of secrets underneath it all.

All Her Fault Episode 1 doesn’t waste any time. One minute, someone shows up at the wrong door, and the next thing you know, there is a full-blown abduction, and it is clear none of this is random.

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Right away, All Her Fault throws out its big questions: who kidnapped Milo, sure, but also, what is Carrie’s real deal with the Irvines? And how many people around Marissa are keeping secrets?

The cast really sells it, and the pacing keeps you on edge. There is a messy, emotional energy running through it, but underneath, you can feel something bigger brewing. It is the kind of opener that leaves you itching to see what they are hiding and how far the conspiracy goes.

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