Look to the Lady - Margery Allingham - BBC Saturday Night Theater

Look to the Lady is a crime novel by Margery Allingham, first published in January 1931, in the United Kingdom by Jarrolds Publishing, London, and in the United States by Doubleday, Doran, New York, as The Gyrth Chalice Mystery. It is the third novel featuring the mysterious Albert Campion, accompanied by his butler/valet/bodyguard Magersfontein Lugg.