Leaving behind Sheffield, her friends and her job, a grieving DCI Matilda Darke finds solace in the wild, untamed beauty of the Lake District. But she can't outrun her reputation. PC Alison Pemberton is living in the shadow of her twin sisters, who were abducted thirty years ago. As the only witness, Alison has spent her life trying to remember the details of that fateful summer day and discover the truth about what happened to her sisters and why, a few months later, her father also disappeared. Matilda finds herself agreeing to try and unearth the truth about the Pemberton twins. With nothing left to lose, Matilda throws herself into the cold case, but someone doesn't want her digging up the past and will do anything to keep the truth hidden.