Emmy winner Sarah Snook (Succession) stars in Peacock’s gripping thriller All Her Fault, based on Andrea Mara’s bestseller. The eight-episode series premiered on November 6, 2025, and follows Sarah Snook as Marissa, a successful, self-made wealth manager whose young son, Milo, disappears while on a playdate with a classmate. Or at least that’s where Marissa and her husband, Peter (Jake Lacy, Apples Never Fall), believed their son to be until Marissa tries to pick him up and discovers he’s vanished.
Snook, who also serves as an executive producer, recently participated in a press conference in support of the Peacock series. Discussing the challenges of taking on the role, Sarah Snook said she needed to find a way to portray the reality of the traumatic situation.
“It is high drama, but like getting into this hysterical, histrionic overreacting … like finding the kernel of truth in these things. Like, ‘What is it like to have your child go missing? What is that like?’ For this person like that, that was the hardest thing to constantly make sure that we were delving down into what is the truthful version of this.”
Snook added, “We’re during the first read through and I write on the first page: ‘Must find different ways to cry.’ Because I was crying all the time, dealing with what’s happening. Finding different levels of like, ‘Okay, this is level 10. This is a guilt cry. This is a shame cry. This is a fear cry. This is a sorrow cry.’ You know, finding ways to create light and shade with a palette like that is tricky.”
Snook describes her character, Marissa, as ambitious, smart, and someone who’s made a name for herself in a male-dominated profession. She also loves being a mother. “[…] She definitely wants to be a parent and wants to be a mom, wants to be present as being a mom,” said Snook. “I think that’s something that’s a part of me as well. I mean, it probably doesn’t come out in this so much because of the content and the thriller aspect and what she’s dealing with. But I wanted to be able to play a character that is closer to me, in terms of warmth. [Who] is just naturally friendly and wants things to go well and has an intention to help that happen. Marissa has bad things happen to her. So, that’s what makes it an interesting story.”
Most parents can relate to momentarily losing sight of their child and the panic that ensues. Snook recalls that director Minkie Spiro shared her experience of when her daughter briefly went missing in a supermarket and the white-hot fear that followed. And as a mom herself, Snook can relate to that fear.
“I have had it just for a moment in that way. You sort of think that she was on this side. She turns out she’s on this side and gone. And you can expand that imaginatively into a world [where] it’s a couple of days. It’s a couple of nights. The worst can happen,” said Snook. “And watching the interviews of the parents who were pleading for the public to have any information. It’s just so raw. And so, it’s the worst thing that could ever happen, to have no knowledge of where the child is. So imaginatively, you go to the worst place, I guess.”
Hot off the success of Succession, Snook was ready for something different. All Her Fault marks her first real thriller, which was part of her attraction to the series. “It had a really great twist that I was excited to be into,” explains Snook. “You engage with all the drama and all these scenes, and then also just playing a mom who is very successful and also wants to be a mom. Often, we see on screen women who are successful and then child rearing is kind of like a pain in the ass. But in this, she wants to be present for both. And how do you balance that?”
Marissa forms a close bond with another mom, played by Dakota Fanning, and it’s that female friendship that really stood out to Snook among the series’ themes. “That’s something that’s really strong and present in my life currently and something that I really lean on: female friendship. I think it’s really nice to see that on screen. We’re not sort of competitive women. You have a right to sort of get into a blame game of saying, ‘It’s her fault, it’s her fault,’ blah, blah, blah. And yet they don’t do that. They choose to stick together and be stronger for it.”
All eight episodes of All Her Fault are now streaming on Peacock. The series also stars Michael Peña, Sophia Lillis, Abby Elliott, Daniel Monks, and Jay Ellis.
 discusses starring in Peacock's gripping thriller, 'All Her Fault,' about a missing child.){kind=link}