In Adolescence Episode 3, we get a glimpse into Jamie’s (Owen Cooper) mind as he and clinical psychologist Briony Ariston (The Crown’s Erin Doherty) sit down for a revealing conversation at Standing Secure Training Centre, where the 13-year-old boy is being held after murdering a classmate. The limited series is not a “whodunnit?” but more of a “why dunnit?” Adolescence looks at how Jamie ended up where he is and more widely at male rage. In Episode 3, “We get to really see inside of this young boy’s head,” says co-creator and star Stephen Graham. “Is it nature? It it nurture? What is it? What has led him to commit this horrific act?”