Autumn 2004. In Bampton, Derbyshire, Lena Fisher is arrested for suffocating her husband, Andrew. Spring 2016. A year after Lena's release from prison, Andrew is found dead in a disused mortuary. Who was the man Lena killed twelve years ago, and who committed the second murder? When Lena disappears, her sister, Kat, sets out to uncover the truth.