Dennis Nilsen is the focus of ITV’s new three-part series Des, starring David Tenant.Nilsen, who confessed to killing 15 men in London during the 1970s and 1980s, is one of the UK’s most notorious serial killers.The killer would befriend the men, who were often homeless, before offering them food or lodgings for the evening.Once back at his North London flat he would strangle them to death.His killing spree went on from 1978 until 1983 – when he was finally arrested.Nilsen’s final victim was Stephen Sinclair, 20, a heroin addict who he met on January 26, 1983.The killer wanted Stephen to listen to his records through headphones.Stephen eventually fell asleep in an alcohol and drug induced stupor in Nilsen’s armchair, which is when he.
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