The Twin (2022)

A mother, Rachel, moves to Finland with her husband and son to cope with the loss of her twin son in a car accident. Her son, Elliot, discovers a wish-granting wall and begins talking to an invisible person. As Elliot exhibits disturbing behaviors claiming to be Nathan, Rachel seeks answers from the town doctor and Helen, who reveal a satanic cult in the town. Rachel takes photographs of Elliot but finds him missing in all the pictures. She is sedated, forced into a ritual, and locked in her room. Rachel escapes and confronts her husband Anthony, who reveals that Elliot is not real, and Rachel created him as a coping mechanism. Rachel accidentally kills Anthony and tries to find Elliot in a grain silo, but he is nowhere to be found. Rachel returns to New York, still delusional and believing that Nathan, Anthony, and Elliot are alive.