The Last House Netflix Cast: Who Plays Ann, Jason, Ruth and Graham?

The Last House Netflix cast is led by Greta Lee as Ann Delgado and Wagner Moura as Jason Delgado. Riley Chung and Emma Ho play Ruth at different ages, while Noah Alexander Sosnowski and Gabriel Barbosa play the younger and older versions of Graham. Arden Cho also has a voice-only connection to Ruth that becomes important late in the movie.

Netflix released the 1-hour-52-minute sci-fi thriller on August 7, 2026. The story follows the Delgado family after every door and window in their home becomes impossible to open, forcing them to stretch limited food and water while trying to understand the threat outside. If the premise puts you in the mood for more survival stories, browse our best sci-fi movies on Netflix guide next.

This cast guide stays mostly spoiler-light. It explains the age changes for Ruth and Graham because those casting switches are central to identifying the actors. A clearly marked note covers the film’s additional Ruth voice credit.

The film’s five-year jump explains why Ruth and Graham are each played by more than one on-screen actor.

Who plays whom in The Last House?

Greta Lee as Ann Delgado

Greta Lee plays Ann Delgado, the mother who becomes the emotional center of the family’s survival effort. Ann initially shares the same confusion and fear as everyone else, but she quickly focuses on the practical work of protecting Ruth and Graham. As the house deteriorates, she helps turn ordinary rooms and household materials into resources the family can use.

Netflix describes Ann as the family’s rock, and Lee’s performance keeps that strength grounded in fatigue, worry, and love rather than making the character seem invulnerable. The role depends on Lee’s ability to show a parent making immediate decisions while carrying the psychological weight of years spent in confinement.

Lee is best known for her acclaimed performance in Past Lives, as well as her roles in Russian Doll, The Morning Show, and Netflix’s A House of Dynamite. She does not appear to maintain a verified public Instagram account, so fan-run profiles have not been linked.

Wagner Moura as Jason Delgado

Wagner Moura plays Jason Delgado, Ann’s husband and the father of Ruth and Graham. Jason responds to the sealed house by trying to understand, repair, and control the situation. When escape proves impossible, that instinct turns him into the family’s builder, scavenger, and physical protector.

Jason is not presented as a flawless action hero. His determination helps the family survive, but his need to solve every danger can also narrow his judgment. Moura gives the character a convincing mix of steadiness, desperation, humor, and anger as days become months and then years.

Moura is widely recognized for playing Pablo Escobar in Netflix’s Narcos. His other credits include The Secret Agent, Civil War, Sergio, and the voice of the Wolf in Puss in Boots: The Last Wish. Moura has no confirmed official social-media profile, so this guide avoids fan accounts.

Riley Chung as young Ruth Delgado

Riley Chung plays Ruth during the first part of The Last House. Young Ruth watches her parents improvise ways to keep the family alive while the rules of the threat remain unclear. Her curiosity and sensitivity are important because she notices details that the adults are more likely to treat as danger.

Chung previously appeared in The Hunger Games: The Ballad of Songbirds & Snakes. You can follow Riley Chung on Instagram, where her professional work on the film has been shared.

Emma Ho as older Ruth Delgado

Emma Ho takes over as Ruth after the movie jumps forward by several years. Older Ruth has spent much of her childhood inside the sealed home, so survival routines feel more normal to her than the outside world does. She also becomes increasingly important to how the family interprets the beings beyond the walls.

Ho’s screen credits include The Baker, The Expanse, Titans, and Star Trek: Strange New Worlds. Her official profile is Emma Ho on Instagram.

Noah Alexander Sosnowski as young Graham Delgado

Noah Alexander Sosnowski plays Graham at the beginning of the confinement. Graham is Ruth’s brother and one of the two children Ann and Jason must reassure even when the adults have no answers. The role helps establish what the Delgado family was like before isolation reshaped every part of their daily life.

Sosnowski appeared in Section 8 and To Will the Sunrise. Netflix identifies him as the younger Graham, with Gabriel Barbosa assuming the role after the time jump.

Gabriel Barbosa as older Graham Delgado

Gabriel Barbosa plays teenage Graham after the five-year jump. By that stage, Graham has grown up inside an improvised survival system built from the remains of the family home. Barbosa’s scenes show how prolonged confinement changes a child’s expectations, relationships, and idea of safety.

Before The Last House, Barbosa appeared in Todd Haynes’s drama May December. His professional profile is Gabriel Barbosa on Instagram.

Minor casting spoiler: The next section identifies a voice credit connected to the final part of Ruth’s story.

Arden Cho as adult Ruth’s voice

Arden Cho provides adult Ruth’s voice and narration. She does not appear on screen as another physical version of the character. The voice-over reframes parts of the story from an older Ruth’s perspective, which is why some cast listings include three performers for Ruth even though only Riley Chung and Emma Ho play her on screen.

Cho is known for voicing Rumi in KPop Demon Hunters and for live-action roles in Partner Track, Teen Wolf, and Avatar: The Last Airbender. Her verified profile is Arden Cho on Instagram.

Why are Ruth and Graham played by different actors?

Ruth and Graham are recast because The Last House jumps forward more than five years. Riley Chung and Noah Alexander Sosnowski establish the children near the start of the crisis. Emma Ho and Gabriel Barbosa then portray them as teenagers after the Delgado family has spent years adapting the house for food collection, water storage, and shelter.

The switch is designed to make the passage of time immediately visible. Greta Lee and Wagner Moura remain Ann and Jason throughout, but their performances, costumes, and physical condition change to reflect long-term hunger, exhaustion, and the pressure of raising children in isolation.

Netflix says the production filmed largely in chronological order. That allowed Lee and Moura to say goodbye to the younger performers and begin working with the older cast at roughly the same point that their characters experience the time jump. The aging house set followed a similar process, gradually losing furniture, surfaces, and appliances as the family repurposed them.

What is The Last House about?

The Last House is a contained survival thriller about a family that wakes to find itself physically sealed inside its home. Rain falls outside, dark silhouettes move through the neighborhood, and the doors and windows refuse to open. With no explanation and no reliable way to contact other people, Ann and Jason must turn the house into a long-term shelter for Ruth and Graham.

The film combines family drama, supernatural horror, and post-apocalyptic science fiction. Its strongest tension comes from watching an ordinary family decide how to divide work, manage fear, and preserve relationships when privacy and outside support disappear. Readers who like mysteries driven by fragmented clues can also explore our Bodies cast and character guide.

The setting grows with the characters. Production designer Kevin Jenkins built the house to age across the story, while the filmmakers used 35 mm film for the earlier period and shifted the visual approach after the time jump. Practical construction, underwater work, and survival consultation helped make the family’s improvised systems feel physically present.

Who made The Last House?

Louis Leterrier directed The Last House from a screenplay by Matthew Robinson. Leterrier is known for Now You See Me, The Incredible Hulk, Fast X, and episodes of Netflix’s Lupin. Robinson’s credits include Love and Monsters and Dora and the Lost City of Gold.

Yair Elazar Glotman composed the score. Netflix’s production coverage says the music begins with intimate family textures before expanding into heavier brass, percussion, and distorted strings as the threat intensifies. Survival consultant Megan Hine advised the filmmakers on shelter, water, food, fire, sleep, and the kind of improvisation a trapped family might attempt.

For more post-apocalyptic coverage, read our update on The Last of Us Season 3. Horror readers can also see what we know about They Will Kill You.