Dennis Nilsen is the notorious evil serial killer that claimed the lives of at least 15 men in the late eighties and early seventies.
He was finally caught in 1983 and given a life sentence, before he died in "excruciating pain" in prison in May 2018 at age 72.
Nilsen had been rushed to hospital when he began experiencing severe abdominal pain and then underwent an operation. But he suffered a blood clot and his condition quickly deteriorated before he died in jail on May 12.
According to the post-mortem examination, his immediate cause of death was pulmonary embolism and retroperitoneal haemorrhage.
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