Daniel Mays is used to hard-hitting, gritty roles – but playing the policeman who nailed serial killer Dennis Nilsen gave him sleepless nights.
Nilsen, who is portrayed by David Tennant in the new mini-series starting tomorrow night, murdered at least 12 young men and boys during his sick killing spree, flushing body parts down the toilet.
And Line of Duty star Daniel, 42, was so haunted by the storyline he even dreamed Nilsen tried to kill him. He says: “One night I had a terrible nightmare that I was somehow locked in an attic with Dennis Nilsen. “My wife was waking me up, I was proper shaking. “And then it happened again.
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