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The Queen's Man: A Medieval Mystery (original 1996; edition 1996)
The Queen's Man by Sharon Kay Penman (1996)
References to this work on external resources.
Wikipedia in English
Amazon.com Amazon.com Review (ISBN 034542316X, Mass Market Paperback)Do you know the story of Sharon Kay Penman's first mystery novel, The Sunne in Splendour? She spent every spare moment for years--first as a law student, then as a lawyer--working on the book about Richard III. And when the only copy of the manuscript was stolen from her car, she sat down and wrote it again. Five excellent historical mysteries later, Penman has started a new series set even farther back in time. It's 1193, and King Richard has disappeared on his way back to England after fighting in the Crusades. Justin de Quincy, the well-educated but illegitimate son of a bishop, is tapped to search for the missing ruler, and he turns out to be just the chap to blow away the cobwebs that often hang over historical mystery. Other Penman picks: Falls the Shadow; Here Be Dragons; Reckoning.
(retrieved from Amazon Thu, 12 Mar 2015 18:08:39 -0400)
The 12th Century sleuth, Justin de Quincy, investigates a murder which could shed light on a plot to usurp the crown of England. Prince John is scheming to unseat his brother, King Richard the Lionheart, who went missing as he was returning from a crusade.
(summary from another edition)
Sharon Kay Penman chatted with LibraryThing members from Aug 10, 2009 to Aug 21, 2009. Read the chat.