Vertical Entertainment and XYZ Films have acquired worldwide rights to David Stubbs’ documentary Belief: The Possession Of Janet Moses, just ahead of its premiere at the 2016 Fantastic Fest, which kicked off today and will run through Sept. 29. Based on the true story of the Wainuiomata exorcism, the pic will be released in theaters early next year.

The film combines interviews and dramatic narrative to depict the reality of the last few days of Janet Moses’ life. Believing that 22-year-old Janet had fallen under the spell of a Mãkutu, or Mãori curse, her whanau (family) both surround her in a circle of love, and subject the young mother to four days and four nights of water cleansing in an effort to rid her of evil. So great was their belief in Mãkutu, that it became their truth.

Stubbs produced the doc with Thomas Robins while Paul Davis and Richard Fletcher exec produced.