Paralyzed by fear from shocking visions, a woman's torment worsens as she discovers her waking dreams are terrifying realities.
In director James Wan's horror film Malignant, Annabelle Wallis plays Madison, a woman who starts having visions of horrible murders when her husband knocks her skull against a wall. As the this murders keep on happening, it is revealed that Emily is sharing her skull with a "teratoma," a form of tumor that can contain muscle and bone, which is alarming. This teratoma is Emily's evil, parasitic twin brother Gabriel, who has been reactivated after many years of dormancy by the injure to Madison's skull and now periodically takes over their shared body to massacre people who have angered him.
This film was directed by James Wan a famous director who has done many horror movies such as, The conjuring Universe including Annabelle and Insidious. It was released on September 10, 2021 now available on HBO Max.
Here's a trailer for the movie: https://youtu.be/Gczt0fhawDs