Britain’s most notorious serial killer, Dennis Nilsen, confessed to killing 15 people in 1983. Over a five-year period, he picked up vulnerable young men, lured them back to his home and strangled them, before disposing of their bodies under the floorboards. The truth about how and why he killed has been the subject of much speculation in books and documentaries over the decades since. Now, with unique access to a wealth of personal archive left in his cell after his death, including over 250 hours of never-before-published cassette tapes of his private recordings, this film will take us into Nilsen’s world. From a young boy growing up in a quiet Scottish fishing village to a cold-blooded murderer prowling the streets of London. Set against the backdrop of 1980s Britain, when mass unemployment drew young men to London in search of their fortunes, only to find themselves destitute and easy prey, and weaving together interviews from police, journalists, survivors, bereaved families, and - for the first time - the killer’s own voice, this feature length documentary explores how Nilsen was able to get away with multiple murders and attacks, unchallenged, for five years.
《全球重大凶案系列》(crimes that shock the world)系列共计六集，将震惊全球的连环杀手奇残酷的凶杀手法公诸于世；并将鉴识人员巨细靡遗的搜证精神及不屈不挠终破奇案的过程透过一个小时的节目介绍给观众。「连续杀人犯」是指在一段时间内杀害许多人的人，他们通常会一再使用同样的杀人手法。有些人连续犯案的时间会持续好几年，像是连环杀手BTK，而有些两次犯案的时间则是会隔很久。 连续杀人犯作案的手法不但都大不相同，连选择杀害的对象类型也很不一样。 有些连续杀人犯会随机犯案，而有些则会锁定特定的对象下手。最令人愤怒的就是，有些被害者手无缚鸡之力，还被应该要照顾他们的人杀害，像是别号为「死亡天使」的比佛莉艾利特。幸好现在的鉴识科学和犯罪心理学愈来愈发达，让办案人员能够指认出一直游走在法网边缘的杀人犯，并将他们绳之以法。