David Tennant is the narrator of a new documentary about serial killer Dennis Nilsen which will premiere in the UK on ITV tonight at 9pm.
Following on from the true crime drama series, Des, which starred David Tennant as the serial killer, The Real 'Des': The Dennis Nilsen Story, will explore the personality of the notorious killer who admitted to murdering up to 15 young men at his homes in London and disposed of their bodies in his garden and down his drain.
A spokesperson for ITV said: "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 hour-long documentary features insight from experts who attempted to get inside the murderer's mind including criminologist David Wilson, who interviewed and corresponded with Nilsen over several decades.
The documentary will also feature new material and previously unseen archive, along with interviews with victims' families and will include footage from an astonishing and infamous interview Nilsen gave to ITV at Albany Prison in 1992.