On the peaceful and secluded estate of Lord and Lady Bottrell, the body of amateur flautist Tony Mills has been found, shot by his own gun. It appears to be suicide - but a closer inspection reveals some sinister inconsistencies, and Chief Superintendent Wycliffe is called in.
As Wycliffe begins to unravel the last days of the dead man, another mystery is revealed: the disappearance of Lizzie Biddick, a pretty young girl who worked as a maid for the Bottrell family.
Gradually, bitter family feuds and secret illicit relationships are uncovered - and then another body shatters the pastoral peace of the Cornish estate for ever...