ONE WEEK AFTER THE DEATH of his 93-year-old twin brother, the reclusive Declan Thomas O'More is found murdered in his study at the ancestral family estate, rambling and isolated Crummock Hall. Suspicion immediately falls upon his five great nieces and nephews, who between them stand to inherit the considerable proceeds of their grandfather's will - along with a valuable library of antiquarian books, a collection that is Declan's lifetime work. And yet each member of this generation - which includes a famous actor and a successful author - is apparently wealthy in their own right. Why would any of them murder their great uncle? DI Skelgill and his team must unravel a mystery that t only harks back to the tragic drowning of the children's parents in Crummock Water in the 1980s, but may also have its roots in the despicable Triangular Trade that enriched so many British and Irish merchant families in the eighteenth century.