Dennis Andrew Nilsen (23 November 1945 – 12 May 2018) was a Scottish serial killer and necrophile who murdered at least 12 young men and boys between 1978 and 1983 in London, England. Convicted at the Old Bailey of six counts of murder and two of attempted murder, Nilsen was sentenced to life imprisonment on 4 November 1983, with a recommendation that he serve a minimum of 25 years. This recommendation was later changed to a whole life tariff. In his later years, he was imprisoned at Full Sutton maximum security prison.

All of Nilsen's murders were committed at the two North London addresses where he resided between 1978 and 1983. His victims would be lured to these addresses by guile, and killed by strangulation, sometimes accompanied by drowning. Following each murder, Nilsen would observe a ritual in which he bathed and dressed the victim's body, which he retained for extended periods of time, before dissecting and disposing of the remains by burning on a bonfire or flushing down a lavatory.

Nilsen became known as the Muswell Hill Murderer, as he committed his later murders in the Muswell Hill district of North London. He died at York Hospital on 12 May 2018 of a pulmonary embolism and a retroperitoneal haemorrhage, which occurred following surgery to repair an abdominal aortic aneurysm.

Two page typed letter. Letter is from 2004 and is general content, signed 'Des Nilsen'. Envelope is included. Letter is in great condition and would be A condition. Envelope has a little wear to it and would be considered C/C- condition. Watermarks appear on scan only and not the actual documents.

ATTN MEDIA: If you or your organization would like hi-res unwatermarked images of the letters please inquire at admin@serialkillersink.net