The recent trailer only made us more so, and now we know exactly how long we have to wait.
The broadcaster has confirmed that the three-part drama premieres on Monday, September 14 at 9pm.
Des also stars Line of Duty actor Daniel Mays as Detective Peter Jay, who led the police investigation to get justice for the victims. The Crown's Jason Watkins plays Brian Masters, Nilsen's biographer.
Between the late 1970s and early 1980s, he murdered over a dozen men who were homosexual, homeless or off-the-grid in his flat in North London. He often hid their dead bodies in his properties, but was eventually arrested when neighbours noticed something wasn't quite right.
He confessed to his crimes after his arrest, but didn't remember the names of his victims. That led the police to open a big investigation in order to find out their identities.
Acting runs in the Tennant family, as the star's son Ty recently starred in the in 2019 movie Tolkien and the recent TV adaptation of War of the Worlds.
The former Time Lord recently joked that he was worried that the youngster wouldn't be any good at acting, but, thankfully, that didn't turn out to be the case.
Des will premiere on ITV on September 14 at 9pm.
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