19. Horror of Darkness
Aired: 3/10/1965
"The liberal middle-class mask well and truly slips in John Hopkins' intense, slow-burning love triangle drama, broadcast in the BBC's groundbreaking Wednesday Play slot. An affluent, cosmopolitan London couple (Jackson and Lynch) find their outwardly charmed lives turned upside down by the appearance of a troubled homosexual friend (Williamson), who quickly touches a raw nerve. In a virtuoso performance, Jackson's spirited, cerebral Cathy finds herself unable to penetrate either man's psyche. Stylishly shot and built to a shocking crescendo by director Page, this gripping chamber piece simmers with suppressed desire, creativity – and rage."
Quoting the description from the 2011 London Lesbian and Gay Film Festival site.