In the chilling horror film directed by Brad Peyton and produced by Jason Blum, Aaron Eckhart stars as Dr. Seth Ember, a brilliant but unorthodox neuroscientist who possesses the rare ability to enter the subconscious minds of people possessed by demons. Rather than performing traditional exorcisms, Ember uses a high-tech procedure to venture into the dreamlike landscapes of his patients' minds, where he confronts the malevolent entities directly, battling them from within to free the afflicted. His latest case involves a young boy named Cameron, played by David Mazouz, who has become the host for a powerful and ancient demon unlike any Ember has faced before. As Ember delves deeper into Cameron's subconscious, he discovers that this entity is intimately connected to his own tragic past, including the loss of his wife and son. With the help of his team, including Carice van Houten and Catalina Sandino Moreno, Ember must confront his deepest fears and personal demons to save the boy and himself. Blending psychological terror with supernatural horror, this PG-13 thriller delivers a tense, mind-bending journey into the darkest corners of the human psyche.