When Commander Dalgliesh is persuaded to visit the Dupayne, a private museum on the edge of Hampstead Heath, he has no idea that he will return a week later under very different circumstances. One of the family trustees has been horribly murdered and Dalgliesh is called in to investigate. When Commander Dalgliesh is persuaded to visit the Dupayne, a private museum on the edge of Hampstead Heath, he has no idea that he will return a week later under very different circumstances. One of the family trustees has been horribly murdered and Dalgliesh is called in to investigate.