Jay and the police throw themselves into proving premeditation.

Reeling from Des's change in plea, Jay and the police throw themselves into proving premeditation. But if they fail, Des could get a light sentence.

David Tennant stars as the killer Dennis Nilsen in this true crime drama

David Tennant stars in this chilling true crime drama about serial killer Dennis Nilsen. Despite Des confessing to multiple murders, the case is anything but straightforward.

A meek civil servant confesses to multiple murders.

When the police discover drains clogged with rotting flesh and bones, a meek civil servant confesses to the killings. How did they allow this to happen over five years?

Jay and the police continue to dig into Nilsen's memories.

With limited resources, Jay and the police continue to dig into Nilsen's memories in an effort to identify and convict him for the murder of every one of his victims.

Des

Des

Series 1

Episode 1

Episode 2

Episode 3