On sick leave from Scotland Yard, Inspector Alan Grant is planning a quiet holiday with an old school chum to recover from overwork and mental fatigue. Traveling on the night train to Scotland, however, Grant stumbles upon a dead man and a cryptic poem about “the stones that walk” and “the singing sand,” which send him off on a fascinating search into the verse’s meaning and the identity of the deceased. Grant needs just this sort of casual inquiry to quiet his jangling nerves, despite his doctor’s orders. But what begins as a leisurely pastime eventually turns into a full-blown investigation that leads Grant to discover not only the key to the poem but the truth about a most diabolical murder.

Alan Grant, Scotland Yard Inspector 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. He prides himself on being able to read a person's character from his appearance, and King Richard seems to him a gentle, kind and wise man. Why is everyone so sure that he was a cruel murderer? With the help of other friends and acquaintances, Grant investigates Richard's life and the case of the Princes in the Tower, testing out his theories on the doctors and nurses who attend to him. Grant spends weeks pondering historical information and documents with the help of Brent Carradine, a likable young American researcher working in the British Museum. Using his detective's logic, he tries to come to the conclusion whether the claim of Richard being a murderer is a fabrication of Tudor propaganda, or was he really a monstrous hunchback. The Daughter of Time was voted greatest mystery novel of all time by the Crime Writers' Association in 1990.