Cold Light of Day (Blu-ray)(1989)

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. Offering a grim and gritty retelling of the story of "Des" Nilsen, often dubbed the "British Jeffery Dahmer", 1989's Cold Light of Day stars Bob Flag (the face of Big Brother in Michael Radford's 1984) as Nilsen-cipher Jorden March, delivering one of the most chilling and credible portrayals of a serial killer ever committed to screen. From writer-director Fhiona-Louise, Cold Light of Day - which picked up the UCCA Venticittà Award at the 1990 Venice International Film Festival - is a hugely underseen and underrated British effort that can stand proudly alongside the likes of Henry: Portrait of a Serial Killer as one of the most unflinching true-crime films of all time.