“Exorcism of Emily Rose”, a horror classic is based on the true story of Anneliese Michel, a 17 year old girl in Germany who was exorcised by her parents and two priests. She suffered from schizophrenia which could be treated by medicines. But her parents relied on exorcism rituals to cure her. She died after few days of exorcism due to malnutrition and starvation.
The Temples of Demons