Twisted serial killer Dennis Nilsen was responsible for the deaths of at least 12 vulnerable young men and boys during his gruesome killing spree.
He lured them back to his homes in North London before he seduced them, killed them ans then stored them for several months before disposing of the bodies in horrifying ways.
Nilsen was finally caught when he complained about a disgusting smell coming from the drains of his flat.
When the landlord sent a clearage expert, plumber Michael Cattran discovered tiny bones clogging up the drains and the police were called in.
Nilsen confessed to the sick murders but claimed his memories of he attacks were vague.
He said he went into a trance during the killings, saying of one victim: “In the morning he was lying there dead on one of the beds, fully clothed.
"I got the impression he wanted to go, and I must have killed him. I can’t remember strangling him.”
Nilsen was jailed for life and died alone and in agony in his prison cell at the Full Sutton maximum security prison.
He had been complaining of stoamch pains and was taken to York Hospital where he was diagnosed with a ruptured abdominal aortic aneurysm, which surgeons managed to repair.
However, the operation caused a blood clot and Nilsen's inquest heard he died slowly over two-and-a-half hours.
When he was found alone in his cell he was lying in his own faeces and the coroner heard that Nilsen spent his final hours in "excrutiating pain".
Recording his verdict, coroner Professor Paul Marks said: “Dennis Andrew Nilsen died of natural causes.”
Now, never-before-seen poems, written by the killer in the weeks leading up to his agonising death have emerged for the first time.
One, about condoms, reveals his sick sexual fantasies while others rage against authority, inequality and the Afghanistan and Iraq wars.
The strangest part of the letters was a poem Nilsen penned about contraception.
He wrote: "The amorous lumber of thin, necessary, latex; Stripped from the packet, concealed in one's jacket; As substantial as a whiff of pink vapour; Settling on the shimmering rum of doubt; The line between fact and fiction; Before the truth will out."
Nilsen would often pleasure himself while sleeping next to the bodies of his victims and would even remove them from where he had stored them to sit in an armchair while he drank.
Brian Masters, who wrote a book about the serial killer, received letters from Nilsen during his time in prison and they would often contain poems.
He also had another pen pal, who has asked to remain anonymous but has released the poems for the first time.
The man said: "Nilsen wrote his letters like lectures. He liked to throw in long words, however they didn't always make sense. He came across as arrogant."
Nilsen's letters also show his twisted view on the world. In one letter, he wrote: I suppose that, like many other people in society, you believe that the ruling authority is intelligent, wise and cognitively well intentioned.
"Despite the fact that our 'moral betters' have gotten us into two aggressively invasive wars, presided over a fracturing of society (with its inordinate gap between rich and poor), and ruined the financial/economic system of Global proportions?"
In 2009, he wrote several letters which show his twisted world view, including bizarre conspiracy theories.
Nilsen seems to think of himself as an intelligent deep thinker rebelling against "the system" and that the world is conspiring against him.
In the letters, he says: "Apart from the banks and the economy there is, apparently, still room for additional rottenness in what is called 'the system'.
"Little things engage the full attention of little mind with all the really big and massive problems escaping their attention."
The serial killer also went on a bizarre rant about the Prison Service blocking his autobiography, poetry and music.
He said: "Over the years the Prison Service has much-interfered with my correspondence coming in or out of prison.
"My autobiographies are banned, and anthology of my poetry and tapes of my musical compositions were banned.
"The censorious beast of the mindless and brainless penal machine (devotedly assisted by its faithful priests, both high and low), continue to censor me at every chance they get.
"And it doesn't take much to set them off."
