Birdie Keller wakes one freezing January morning to the news she’s been waiting 18 years to hear. Jimmy Maguire, the man who killed her sister, has been freed from jail. She leaves for London with a pistol and a plan: to find this man and make him pay. But every story has two sides. Jimmy can sense he’s being hunted. He knew Birdie a long time ago, in a life she’d sooner forget, and he isn’t the only one with something to hide. As the two circle each other in a heart-stopping game of cat and mouse, they plunge into a murky world of family secrets, betrayals and unsolved mysteries.

It's New Year's Eve, 1972, when a boat pulls up to the Maiden Rock lighthouse with relief for the keepers. But no one greets them. When the entrance door, locked from the inside, is battered down, rescuers find an empty tower. A table is laid for a meal not eaten. The Principal Keeper's weather log describes a storm raging round the tower, but the skies have been clear all week. And the clocks have all stopped at 8:45. Two decades later, the wives who were left behind are visited by a writer who is determined to find the truth about the men's disappearance. Moving between the women's stories and the men's last weeks together in the lighthouse, long-held secrets surface and truths twist into lies as we piece together what happened, why and who to believe.