Dennis Andrew Nilsen also known as the Kindly Killer and the Muswell Hill Murderer is a British serial killer who lived in London. Nilsen was known for killing fifteen men and boys gruesomely in his small flat in London, England. He was born November 23, 1945, in Fraserburgh, Scotland. Nilsen was born from a Scottish mother and Norwegian father. When he was four years old his parents divorced and his father was an alcoholic. His mother then remarried and Nilsen was sent to live with his grandparents, but after a few years, he was sent back to live with his mother. Nilsen said when his beloved grandfather died it was the first traumatic event to shape his life when he was a small child.
