The Daughter of Time by Josephine Tey

Who really killed the princes in the tower?

Was Richard III truly the ogre of legend and Shakespeare's play. - a wicked uncle who murdered his nephews to steal the crown of England?

Inspector Alan Grant is not so sure. Laid up in hospital with a broken leg, he becomes obsessed with unravelling this most enduring of historical mysteries. As he investigates with the help of an enthusiastic young American scholar, he unearths long-buried intrigues and comes to a startling conclusion.