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 follow a trail of clues delivered by a mysterious teenage boy. Kat must uncover the truth - before there's another death . . .