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Margery Allingham
Margery Louise Allingham was an English writer of detective fiction, best remembered for her "golden age" stories featuring gentleman sleuth Albert Campion. - Wikipedia
Death of a Ghost
A recently deceased artist, John Sebastian Lafcadio, planned for his reputation to soar after his death by leaving sealed paintings with his agent. His widow is tasked with releasing them annually, but the unveiling of the eighth canvas is marred by murder. As more deaths occur, including a poisoning and a planned assassination of Albert Campion himself, the celebrated sleuth must race against time to catch a killer operating in plain sight.