Cassandra Reilly, an Irish-American translator and amateur sleuth, shares a flat in London with her long-time friend, retired bassoonist Nicky Gibbons. Their lives are disrupted when Cassandra attends a lecture on the beguines, laywomen who lived in sisterhood in thirteenth-century Belgium. The beguines were the subject of a popular historical mystery series by Stella Terwicker who died ten years before, but whose literary estate is still creating...