There are several sequences in which people, including children, are possessed by demonic spirits. Attempts are made to exorcise the demons, but the demons violently resist, resulting in injuries to people who are present.
This work contains flashing images which may affect viewers who are susceptible to photosensitive epilepsy.
Strong violence includes stabbing and slashing, with resultant heavy blood spurts, a child killing his parents and sister with an axe, and a child being set on fire.
There is infrequent strong language ('f**k'), as well as milder terms such as 'shit', 'ass' and 'piss'. It is briefly implied that a boy may have been sexually abused when, during a flashback scene, a priest puts a hand on his thigh and pulls a sinister face. There is a use of the discriminatory term 'faggot'.