Exorcisms and apparitions: The Vatican and the supernatural in the modern age

A state of Our Lady of Fatima
Believers carry the statue of Our Lady of Fatima during a mass in Fatima, Portugal this year. Thousands of pilgrims converged on Fatima Sanctuary to celebrate the anniversary of the Fatima's miracle when three shepherd children claimed to have seen the Virgin Mary in May 1917.
Francisco Leong | AFP/Getty Images