In this chilling psychological drama, Dan Stevens stars as a man committed to a crumbling, understaffed psychiatric hospital in 1980s New York, where he quickly discovers that the institution's horrors extend far beyond its neglectful care. Forced to navigate a labyrinth of bureaucratic indifference and volatile patients, he becomes fixated on a terrifying, otherworldly presence the staff whisper about as the Devil in Silver—a malevolent entity that prowls the hospital's shadowy corridors after dark. Judith Light co-stars as a veteran nurse who has learned to survive by looking the other way, yet finds herself drawn into the unfolding nightmare. Blending historical true crime with supernatural terror, the series creates a suffocating atmosphere of institutional decay and primal fear. As the protagonist rallies a small group of fellow patients to confront the entity, they must also battle the systemic failures that have trapped them all, blurring the line between what is monstrous and what is merely human.