Who are the main family members trapped in The Last House?

The Trapped Family of Four

1. Ann (Greta Lee) — Mother, one of the heads of the family.
2. Jason (Wagner Moura) — Father, co-head of the family.
3. Older Ruth (Emma Ho) — One of their children, an older daughter.
4. Young Ruth (Riley Chung) — Same daughter at a younger age (flashbacks/younger version).
5. Older Graham (Gabriel Chung) — Their older son.
6. Young Graham (Noah Alexander Sosnowski) — Same son at a younger age.

If you want, I can also pull up details about how their relationships evolve over the course of the story.

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Sources Information based primarily on casting listings and Netflix/Tudum features:

• Ann = Greta Lee; Jason = Wagner Moura
• The children and their roles: Older/Young Ruth (Emma Ho / Riley Chung), Older/Young Graham (Gabriel Chung / Noah Alexander Sosnowski)