Read this one before, but it's worth a revisit. Young Justin de Quincy is down on his luck and about to head to London to find employment when he rides to the rescue in a roadside ambush. The dying man is carrying a letter for Queen Eleanor and Justin makes good a rash promise to deliver the letter. He does so and the news it contains has wide reaching implications - so much so that the Queen then tasks him with finding out who killed the original messenger and why. Justin is not necessarily the most well equipped person to do this, but he gets there in the end.