Regression, which means an act of going back, stars Ethan Hawke and Emma Watson at the backdrop of Minnesota, 1990. The film follows detective Bruce Kenner (Hawke) investigating the case of young Angela (Watson), who accuses her father, John Gray (David Dencik), of an unspeakable crime. When John unexpectedly and without recollection admits guilt, renowned psychologist Dr. Raines (David Thewlis) is brought in to help him relive his memories and what they discover unmasks a horrifying nationwide mystery.