Editing Dennis Andrew Nilsen (section)

==The murders==
Between 1978 and 1983, Nilsen is known to have killed 15 men and boys. The majority of Nilsen's victims were homeless or homosexual men whom he would typically meet in bars or on the streets and lure to his home with an offer of food, alcohol or shelter. Once at Nilsen's home, the victims were usually given food and alcohol, then strangled and drowned during the night. He used his butchering skills, which he gained from his time as a cook in the army, to help him dispose of the bodies. The bodies were not immediately dismembered, but were kept, sometimes for several months, in different locations in his home, usually under the floorboards. Nilsen later admitted to having engaged in sexual acts with the corpses of his victims.

Nilsen had access to a large garden when living at 195 Melrose Avenue, Cricklewood. He was able to burn many of the remains in a bonfire. Entrails were dumped over the garden fence to be eaten by wildlife.

In October 1981 Nilsen moved several miles eastwards to an attic flat at 23 Cranley Gardens, Muswell Hill. Here he had no access to a garden and the flat itself had no floorboards. This meant that, as his murders continued, he found it difficult to dispose of the remains and had bin bags full of human organs stored in his wardrobe. Neighbours began to notice the smell. Three people were murdered at this address, and all were stored in cupboards and chests. Nilsen attempted to dispose of the bodies by boiling the heads, hands and feet to remove the flesh and by chopping the entrails into small pieces and flushing them down the toilet. This eventually blocked the flats' drains.

Nilsen's murders were first discovered by Dyno-Rod, a drain-cleaning company responding to a blocked drain. The company found the drain was packed with a flesh-like substance. The drain inspector then called his supervisor, but no assessment was made until the next day, by which time the drain had been cleared. This aroused the suspicions of the drain inspector and his supervisor, who immediately called the police. Upon closer inspection, some small bones and what looked like chicken flesh were found in a pipe leading from the drain, with rats feeding on them; the remains were passed to pathologist Professor David Bowen, who advised that they were human.

Detective Chief Inspector Peter Jay was called to the scene with two colleagues and waited outside until Nilsen returned home from work. As they entered the building, DCI Jay introduced himself to Nilsen and explained that he had come about his drains. Nilsen asked why would the police be interested in his drains and also if the two officers were health inspectors. He was told they were police colleagues and given their names. They then climbed the stairs together and as they entered the flat DCI Jay immediately smelled rotting flesh. Nilsen queried why the police would be interested in his drains, so the officer told him they were filled with human remains. "Good grief, how awful!" exclaimed Nilsen. "Don't mess about, where's the rest of the body?" replied Jay. Nilsen responded calmly, admitting that they were in two plastic bags in his wardrobe. He was then arrested and cautioned on suspicion of murder and taken to the police station. On the way back to the station, Nilsen was asked how many bodies they were talking about and replied "15 or 16, since 1978".

Nilsen later apologised to the police for not being able to remember the exact number of people he had killed. When his flat was searched, human remains were found inside black bin liners in a wardrobe. When interviewed by police he confessed there were further remains in a tea chest in his living room and in an upturned drawer in his bathroom. The dismembered body parts were the bodies of three men. His former address was also searched and numerous small bone fragments were found in the garden.