Rent Close My Eyes (1991)

Children of a broken marriage, Richard (Clive Owen) and his sister Natalie (Saskia Reeves), meet up after years apart and embark on a forbidden and illicit affair. Against the backdrop of a glorious British Summer, their relation-ship intensifies as they struggle to accept the aftermath of their actions. Richard becomes gripped with infatuation for his sister and matters come to a head when Natalie's husband Sinclair (Alan Rickman) suspects that his wife is having an affair, little knowing that the lover he is so jealous of is his wife's own brother.