Susannah Cahalan, an up-and-coming journalist at the New York Post becomes plagued by voices in her head and seizures, causing a rapid descent into insanity.

Top Cast

Chloë Grace MoretzSusannah Cahalan

Thomas MannStephen Grywalski

Richard ArmitageTom Cahalan

Carrie-Anne MossRhona Nack

Jenny SlateMargo

Tyler PerryRichard

Alex ZaharaAllen

Jenn MacLean-AngusGiselle