The story is about one of the most infamous serial killers in UK history: Dennis Nilsen. Known as the "kindly killer", Nilsen was an unassuming civil servant who became Britain₂s most prolific serial killer of the time. The chilling true-crime series delves into Nilsen₂s emotionally elusive psyche after his arrest in 1983. Includes French SDH.

Title from sell sheet. Originally broadcast as single episodes of a television program in 2020. Wide screen (1.78:1).