Richard and Sarah meet in London, fall in love and, after some complications, marry. To escape the rat-race - and their ex-partners - they decide to move to the countryside, and buy a cottage in the pretty Suffolk village of Worth. At first, they struggle to find friends, but then they meet Catherine, who's recently moved into the cottage next door. As a single woman, she admires their love for each other. As a couple, they admire her uncompromising nature. On weekday nights in sleepy Worth, with nothing to do, the trio's pastime is each other. A delightful friendship ensues. But there are things to Catherine that don't add up. Topics avoided, questions unanswered. She describes a manipulative but never-seen sister, who she says is making her life hell. Richard and Sarah offer advice as best they can, but they are starting to feel uneasy. The rural idyll is beginning to fade. With Richard struggling to find work, Sarah, who's pregnant, takes a job with a woman she meets at a conferen