A single mother and her child fall into a deep well of paranoia when an eerie children's book titled "Mister Babadook" manifests in their home.A single mother and her child fall into a deep well of paranoia when an eerie children's book titled "Mister Babadook" manifests in their home.A single mother and her child fall into a deep well of paranoia when an eerie children's book titled "Mister Babadook" manifests in their home.