The Good Sister

In "The Good Sister," a couple struggling to repair their crumbling marriage receives a shocking revelation: the wife has a long-lost twin sister. Initially hoping that this new family member will bring them closer together, the husband instead finds himself drawn into a dangerous and passionate affair with the sister, who harbors a treacherous secret. As the triangle intensifies, loyalties are tested and dark truths are revealed, threatening to destroy everything they thought they knew about love, family, and themselves.

The Good Sister is currently unavailable to stream in undefined on the streaming services we have in our catalogue

Some movies that have similar genres and were produced around the same time as The Good Sister include Shutter Island, Burning, Gone Girl, Thelma, Peacock, Red Riding Hood.