Nilsen has revealed the autobiography will be released after his death in Full Sutton Prison

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The murderer has written the book behind bars and and hidden it so that it cannot be accessed until after he dies.

Nilsen, 70, was caged for life in 1983 for killing and dismembering at least 12 men over the previous five years in London.

But according to the Daily Star he has hinted more victims have never been traced.

His book is likely to reveal for the first time the full extent of his evil.

Nilsen lured his victims back to two properties and either drowned or strangling them before bathing and dressing their bodies which he later had sex with.

He would then dismember his victims – rent boys, students and the homeless who had been promised food or shelter – before burning their bodies on a bonfire, boiling them or flushing their remains down the toilet.