The Woman in Cabin 10

There is a specific kind of vertigo that comes from seeing something impossible and then having a man in a very expensive suit tell you that your eyes are lying to you. It’s a staple of the "unreliable narrator" subgenre that has dominated our screens since Gone Girl (2014) recalibrated the thriller landscape, but Simon Stone’s adaptation of The Woman in Cabin 10 feels less like a gritty psychological deconstruction and more like a high-gloss, high-seas update of a classic locked-room mystery.

I watched this on a rainy Tuesday while my cat was aggressively kneading my stomach, and honestly, the rhythmic physical discomfort of a 12-pound feline was the perfect accompaniment to the escalating anxiety on screen. It’s the kind of film that knows exactly what it is: a sleek, streaming-era "grip lit" adaptation that values atmosphere and a panicked Keira Knightley over reinventing the wheel.

A Floating Gilded Cage

The setup is pure wish-fulfillment-turned-nightmare. Lo Blacklock (Keira Knightley), a travel journalist who is—in true thriller fashion—recovering from a traumatic home invasion and perhaps leaning a bit too hard on the minibar, lands an assignment on the Aurora Borealis. It’s a boutique luxury yacht so exclusive it makes a Viking cruise look like a commute on a crowded bus.

Stone, who previously showed a knack for textured, quiet drama in The Dig (2021), uses the first twenty minutes to establish a sense of suffocating luxury. The cinematography by Ben Davis (who traded the cosmic scale of Eternals for the tight, mirrored corridors of a ship) makes the yacht feel both expansive and impossibly thin. When Lo hears a splash and sees what she’s certain is a body being dumped from the neighboring cabin, the film shifts gears. The problem? Cabin 10 is officially empty. No passenger is missing. The guest list is accounted for.

It’s basically 'Below Deck' if the guest list was curated by Agatha Christie on a Xanax bender. The film leans heavily into the isolation of the open ocean. In the current streaming landscape, we see a lot of these "destination thrillers," but The Woman in Cabin 10 manages to feel more grounded because it focuses so intently on Lo’s crumbling credibility.

Knightley on the Edge

We’ve seen Keira Knightley play the "woman on the verge" before, but here she sheds the period-piece poise for something much more jagged. She plays Lo as a woman who is acutely aware that her history of anxiety and a recent break-in make her the perfect person to ignore. There’s a frantic energy to her performance that carries the middle act when the plot starts to stretch the limits of logic.

She’s backed by a cast that feels almost over-qualified for a 95-minute thriller. Guy Pearce shows up as Richard Bullmer, the owner of the yacht, radiating the kind of "trust me" energy that usually suggests you should do the exact opposite. David Ajala provides a needed anchor as Ben, Lo’s ex-flame and fellow journalist, while Gugu Mbatha-Raw (who was so good in Loki and Belle) pops up in a role that I won’t spoil, but she brings a level of gravitas that the script sometimes lacks.

The chemistry between the ensemble is less about "whodunnit" and more about the social politics of the ultra-wealthy. There’s a biting contemporary edge to how the other passengers view Lo—not just as a possible "hysteric," but as an intruder in their tax-free paradise.

The Modern Mystery Machine

Produced by SISTER (the powerhouse behind Chernobyl), the film fits squarely into the 2020s trend of "prestige-lite" streaming content. It’s handsomely mounted, clearly had a budget that allowed for actual location shooting rather than just a green-screen "Volume," and it clocks in at a lean 95 minutes. In an era where every mid-range thriller thinks it needs to be a ten-part limited series, the brisk pacing is a genuine relief.

However, the film does grapple with the reality of being a contemporary adaptation. In Ruth Ware’s 2016 novel, the internal monologue does a lot of the heavy lifting. On screen, Stone has to rely on visual cues and Knightley’s face to convey the gaslighting. Turns out, watching a rich person lie to a tired journalist is the most relatable content of 2025, even if the logistics of the "missing" woman get a little convoluted toward the finish line.

One bit of trivia that cracked me up: the production reportedly had to deal with significant North Sea weather, which actually helped the actors look genuinely seasick and miserable. You can’t fake that kind of grey-tinged pallor, and it adds a layer of physical reality to Lo’s mental unraveling.

The Woman in Cabin 10 doesn't try to be the next Vertigo, and it’s better for it. It’s a solid, well-acted, and claustrophobic thriller that understands the assignment: give us a glamorous setting, a mystery that keeps us guessing through the second act, and a lead actress who can sell a nervous breakdown with a single wide-eyed stare. It’s the perfect "Friday night with a glass of wine" movie—just maybe don't watch it right before you book a cruise.