Showing Look to the Lady by Margery Allingham

A sacred chalice leads to murder,

The Gyrth family had guarded the Chalice for hundreds of years. It was held by them for the Crown. Its antiquity, its beauty, the extraordinary legends that were connected with it, all combined to make it unique of its kind. It was irreplaceable. No thief could hope to dispose of it in the ordinary way. And indeed no ordinary thief would dream of trying. But there are others besides those who make their living by robbery, others whose immense wealth and passion for collecting render them less immune to the practical considerations that must guide even the less honestly minded citizens. These people cherish a desire to possess for their own private pleasure treasure that cannot be bought. And it was by this sort of person that the Chalice, and the lives and happiness of its guardians, were now threatened.

Margery Allingham was born in London in 1904. Her first novel was published when she was 17. In 1929 she published The Crime at Black Dudley and introduced the character who was to become the hallmark of her writing - Albert Campion