Cold Light of Day 1989 ( 5.3)

February, 1983. Detectives are called to a residential address in the London suburbs following reports that the drains have been clogged by human remains. One of the property’s residents, Dennis Nilsen – a mild-mannered and unassuming civil servant – is brought in for questioning, leading to the discovery of one of the most shocking and disturbing cases of serial murder ever to rock Britain.