Dennis Nilsen is one of the UK's most notorious serial killers, murdering at least 15 men between 1978 and 1983 in London. Michael Ogden re-examines the case, focusing on the lives of the victims, and meeting with former police officers to discover their regrets about closing the case prematurely, and exploring the homophobic attitudes that allowed Nilsen's crimes to go un-investigated for many years.
How to watch The Nilsen Files
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