
Des is based on material from the book Killing for Company by Brian Masters, which focuses on one of the most infamous cases in UK criminal history, that of serial killer Dennis Nilsen. Told through the prism of three men, Dennis Nilsen, Detective Chief Inspector Peter Jay and biographer Brian Masters, the series exploring the personal and professional consequences of coming into contact with a man like Nilsen..

On 9 February 1983, Detective Chief Inspector Peter Jay discovers a drain clogged with rotting flesh and bones. The culprit, Dennis Nilsen, freely admits to the police that it's not just one or two bodies, but "15 or 16, I think".

With limited resources, Jay and the police continue to dig into Nilsen's memories in an effort to convict him for the murder of every one of his victims. But when Des withdraws his cooperation and stops talking, Jay fears justice will be lost.

Reeling from Des' change in plea, Jay and the police throw themselves into proving premeditation. If they can show the court that Des was undoubtedly of sound mind when he committed his crimes, he will go down and never be released.
Complete episode guide for Des with detailed information about every season and episode including air dates, summaries, ratings, and streaming availability in United States.
This episode guide is organized by seasons, making it easy to track your viewing progress or find specific episodes. Use the episode information to plan your binge-watching sessions or catch up on missed episodes.