this is central india, the temple of guru maharaj.and the living come together. [ screaming ] >> reporter: they're here for an exorcism. this woman is believed by her husband to be possessed by demons. she's not alone. locals say thousands of women have been brought here over the years by their husbands or families where a reclusive guru claims to drive off demons and restore sanity. for a price. we're on a journey across india to find this guru and witness a rare mass exorcism at his temple. along the way, we see just how early the idea of demonic possession takes root. these students are being taught in school that exorcisms are just a show. >> this teacher is intent on teaching these kids black magic doesn't exist. but it's so ingrained in their culture. all these kids say, yes, of course we believe. >> reporter: to get rid of ghosts rural india has traditionally relied on gurus claiming to have supernatural powers. but we're here with this man, d.b.ruwat. he says it's all a sham. >> it's an attempt to keep people subjugated for ye