🌊The Woman in Cabin 10 (2025) – Keira Knightley’s Gripping Netflix Thriller Sets Sail October 10: Cast, Plot, Release Date & Where to Watch

They don’t want you to believe what she saw.

Netflix is diving deep into psychological mystery this fall with The Woman in Cabin 10, an atmospheric thriller adapted from Ruth Ware’s bestselling novel. Set aboard a luxury yacht where elegance meets paranoia, this chilling tale stars Keira Knightley as a journalist whose eyewitness account of a midnight murder is met with chilling disbelief. Directed by Simon Stone (The Dig), the film sails onto Netflix on October 10, 2025.

🚢 A Voyage into Fear

“Sometimes the calmest waters hide the deepest secrets.”

Knightley plays Laura “Lo” Blacklock, a travel journalist sent on assignment to cover the maiden voyage of a high-end cruise ship. What should be a dream trip quickly spirals into a nightmare when Lo witnesses a woman being thrown overboard in the dead of night.

But when she raises the alarm, the captain insists that all passengers and crew are accounted for. The mysterious “woman in cabin 10” — it seems — never existed. With no one believing her, Lo begins her own desperate investigation, unsure if she’s uncovering the truth or slipping into madness.

🎬 Behind the Curtain: The Team and the Vision

Directed by Simon Stone, the film’s screenplay was crafted by Joe Shrapnel, Anna Waterhouse, and Stone himself, with an adaptation touch from Emma Frost (The White Queen). Known for weaving emotional tension through elegant storytelling, Stone brings a chilling sense of realism to the story’s claustrophobic world.

The film’s cinematography by Ben Davis (Three Billboards Outside Ebbing, Missouri) and score by Benjamin Wallfisch (It, The Invisible Man) promise a haunting blend of isolation and elegance. Every frame whispers danger — even in daylight.

🌒 Cast: The Faces of Suspicion

A stellar ensemble adds layers to this mystery at sea:

• Keira Knightley as Laura “Lo” Blacklock

• Guy Pearce as Richard Bullmer, the enigmatic ship owner

• Gugu Mbatha-Raw, Kaya Scodelario, and Hannah Waddingham in key supporting roles

• Art Malik, Daniel Ings, David Morrissey, and David Ajala round out the cast

Each character hides something behind their polished smiles — a secret, a motive, or maybe just fear.

💭 “You think you saw something. But what if you didn’t?”

The novel by Ruth Ware was hailed as a “modern-day Hitchcockian thriller”, and the film embraces that tone completely. Expect confined tension, unreliable narration, and a sense that truth itself is drifting away with the tide.

Knightley brings both fragility and ferocity to her role — a woman gaslighted by everyone around her, yet too determined to let go of what she knows she saw. The line between delusion and discovery blurs as the yacht glides through endless, indifferent waters.

⚓ A Netflix Thriller Worth Watching

The Woman in Cabin 10 stands poised to be one of Netflix’s most suspenseful releases of 2025. With its mix of psychological intensity, mystery, and maritime isolation, the film asks the unnerving question:

“What happens when the truth sinks — and no one believes you?”

Prepare for paranoia, polished luxury, and pulse-pounding twists when The Woman in Cabin 10 premieres October 10, 2025, only on Netflix.