On holiday to escape the nightmares of his last case, disgraced soldier turned private detective John "Slim" Hardy comes upon something buried in the peat on Bodmin Moor. Unfinished and water-damaged but still ticking, the old clock provides a vital clue to an unsolved missing-persons case. As Slim begins to ask questions of the tiny Cornish village of Penleven, he is drawn into a world of lies, rumours, and secrets, some of which the residents would prefer to stay buried. Twenty-three years ago, a reclusive clockmaker left his workshop and walked out onto Bodmin Moor, taking his last, unfinished clock with him. He disappeared. Slim is determined to find out why.