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The Daughter of Time was voted best crime novel of all time, and I enjoyed it.

https://www.fadedpage.com/showbook.php?pid=20131111

> Alan Grant, Scotland Yard Inspector (a character who also appears in five other novels by the same author) is feeling bored while confined to bed in hospital with a broken leg. Marta Hallard, an actress friend of his, suggests that he should amuse himself by researching a historical mystery. She brings him some pictures of historical characters, aware of Grant's interest in human faces. He becomes intrigued by a portrait of King Richard III.