Allingham is
an author of detective fiction from its 'Golden Age', whose hero
is an aristocratic adventurer known as Albert Campion.
Novel
Look to the Lady, Jarrolds, 1931
Essentually an "Albert Campion" detective novel,
Look to the Lady does have an obvious and uncharacteristic
supernatural element at the very end of the book.
ditto, as The Gyrth Chalice Mystery, Doubleday (U.S.),
1931
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