Three married couples and a divorcee move in to the newly-built Gurney Close, which overlooks the river Wye. They organise a party to celebrate their new homes, and all goes well - until one of them is found dead the next morning. Lambert and Hook investigate.
In the year 1780, Harriet Westerman, the willful mistress of a country manor in Sussex, finds a dead man on her grounds with a ring bearing the crest of Thornleigh Hall in his pocket. Not one to be bound by convention or to shy away from adventure, she recruits a reclusive local anatomist named Gabriel Crowther to help her find the murderer, and historical suspense's newest investigative duo is born.