The most notorious serial killer in the UK, Dennis Nielsen, admitted to killing 15 people in 1983. Over the course of five years, he captured vulnerable young people, lured them back home and strangled them, then buried their bodies under the floor. For decades, the truth about how and why he killed has been a subject of much speculation in books and documentaries. Now, this movie will take us into Nielsen's world, where we can uniquely access a vast collection of personal files left behind in his cell after his death, including over 250 hours of private cassette tapes that have never been made public. From a little boy growing up in a quiet Scottish fishing village to a cold-blooded killer wandering the streets of London. This lengthy documentary is set in the 1980s in England, where massive unemployment attracted young people to London in search of wealth, only to find themselves penniless and vulnerable to becoming prey. The documentary weaves together interviews from police, journalists, survivors, families of the deceased, and the killer's own voice, exploring how Nielsen escaped multiple murders and attacks without being targeted within five years.
