Kate Forman has an enviable life: a loving family and a perfect husband, Paul. But late one night Paul comes home drunk and covered in blood, mumbling about having killed something - or someone. When an attractive young woman, who works for Paul, is found murdered, Kate's suspicions about what he has really done send her on an increasingly desperate search for the truth that threatens to smash her carefully constructed life. Doing the right thing should seem obvious, but as the lies multiply, the truth is not as straightforward as it seems. How well do you know the person you're married to?