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No doubt that ITV's Des is your latest telly obsession - if so, you'll be pleased to know that the network is set to explore the real story of the infamous serial killer the show is based on.
The Real 'Des': The Dennis Nilsen Story is set to air tonight (17 September) at 9pm, delving into the personality of the notorious murderer who admitted to killing up to 15 young men at his home in London.
And if that weren't enticing enough, none other than the star of Des, David Tennant, is set to narrate the documentary, alongside experts who attempt to psychoanalyse the murderer.
This includes criminologist David Wilson, who spoke with Nilsen over several decades, so you can bet he has a lot to say about the oddly honest criminal and how his mind worked.
The one-off, hour-long episode arrives a day after the three-part drama, in which the Doctor Who actor starred as the titular character, who was outed after the remains of his victims were discovered down his drain.
As explained by ITV's description of the show: "On the surface, Nilsen was a mild-mannered civil servant, though his true persona was terrifying and deadly.
"Nilsen was drawn to young men who he murdered and brutalised in bizarre rituals. But he was also a rarity - a killer who wanted to talk and to boast about his crimes from the moment he was caught."
The programme will feature new material alongside exclusive archive content, with accounts from the victims' families and scenes from Nilsen's unbelievably frank interview at Albany Prison in 1992.
Anyone who's had a chance to catch Des will know that it was during this interview he admitted to his crimes with absolutely no shame or remorse.
What makes the case even more interesting is that Nilsen had joined the army back in 1961 before becoming a police officer and then a civil servant.
Despite his prestige, it was during the latter stages of his career that he carried out the horrifying spree at his flat in Melrose Avenue in Cricklewood, London.
He eventually went on to kill at a new home in the Muswell Hill district of North London.
While residing between these two properties, Nilsen committed his crimes between 1978 and 1983, where he would lure the victims and kill them by strangulation or drowning.
Afterwards, Nilsen would carry out a ritual in which he bathed and dressed the victim's bodies before dissecting them and getting rid of the remains either via bonfire or flushing them down the toilet.
If you're wondering how true to life Des was, this documentary sounds like it'll have all the answers.
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