These themes take shape through the story of 13-year-old Jamie Miller (Owen Cooper), who is arrested for the murder of Katie Leonard (Emilia Holliday), who attends his school. Adolescence was filmed in one continuous take,

Dive into the shocking ending of Netflix's No. 1 crime series, "Adolescence." Why did Jamie kill Katie, and what happened to him and his family in Episode 4?

It appears Jamie killed Katie after being influenced by corners of the internet that convinced him he was too "ugly" to receive affection from a woman, as he lets out in his conversation with the therapist in Episode 3. When Katie turned down his advances and bullied him with an emoji that implied he was an incel, he did something tragic.