The magnificent Dungeon House and gardens overlook Cumbria's remote and beautiful western coast. Twenty years ago, the wealthy Whiteleys called it home. But not a happy one. Malcolm Whiteley had begun to disintegrate under financial pressure, as well as suspecting his wife of infidelity. After a disastrous party, his wife told him their marriage was over. Sadly an old Winchester rifle was at hand... Today, Hannah Scarlett's cold case team is looking into the disappearance of Lily Elstone, daughter of Malcolm's accountant. The investigation coincides with the disappearance of Shona Whiteley, daughter of Malcolm's nephew Nigel, current resident of the Dungeon House. As Hannah's team digs into the past, doubts arise about the night Malcolm killed his wife and daughter, then himself. While Hannah leads the complex police inquiries, secrets return with old neighbors and information comes to light that breaks everything wide open. Does it come too late?