A brother and sister brought up by different parents meet after many years and allow their mutual attraction to run amok, embarking on a torrid incestuous affair. However, their illicit passion rapidly spirals out of control - leading inevitably to tragedy. Stephen Poliakoff's drama, starring Clive Owen, Saskia Reeves, Alan Rickman and Karl Johnson.

After some years of tension, Richard begins a sexual relationship with his sister Natalie. Now married, the relationship proves dangerously obsessional.