Get the full experience when you use our app. READ IN APP Accessibility statement Skip to main content Search Navigation Democracy Dies in Darkness Sign in This article was published more than 6 years ago POSTEVERYTHING As a psychiatrist, I diagnose mental illness. Also, I help spot demonic possession. How a scientist learned to work with exorcists. By Richard Gallagher July 1, 2016 at 6:00 a.m. EDT Matt Rota for The Washington Post Gift Share In the late 1980s, I was introduced to a self-styled Satanic high priestess. She called herself a witch and dressed the part, with flowing dark clothes and black eye shadow around to her temples. In our many discussions, she acknowledged worshipping Satan as his “queen.” Get the full experience. Choose your plan I’m a man of science and a lover of history; after studying the classics at Princeton, I trained in psychiatry at Yale and in psychoanalysis at Columbia. That background is why a Catholic priest had asked my professional opinion, whic