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Movies like Red Sky (Metal Giants) (2022)

Bianca an emotionally unstable office worker is asked by a mysterious client to deliver documents insisting she must deliver them herself in person. On her arrival Bianca is kidnapped. Her captor, leader of a cult, drugs Bianca whilst tormenting her with continuous relentless indoctrination, forcing Bianca her to question the veracity of her memories, even those most life forming, as a victim of child abuse.