See moreSuccessful New York psychiatrist Richard Gallagher was skeptical yet intrigued when a hard-nosed, no-nonsense Catholic priest asked him to examine a woman for a possible exorcism. Meeting her, Gallagher was astonished. The woman's behavior defied logic. In an instant, she could pinpoint a person's secret weaknesses. She knew how individuals she'd never known had died, including Gallagher's own mother, who passed away after a lengthy battle with ovarian cancer. She spoke fluently in multiple languages, including Latin-but only when she was in a trance.
This was not psychosis, Gallagher concluded. It was, in his scientific estimation, what could only be describe as paranormal ability. The woman wasn't mentally disturbed-she was possessed. This remarkable case was the first of many that Gallagher would encounter. Sought after today by leaders of all faiths-ministers, priests, rabbis and imams, Gallagher has spent a quarter-century studying demonic activity and exorcisms throughout history and has witnessed more cases than any other psychiatrist in the world today.