The King's Coroner - The Sir Law Kintour Mysteries, #4

A game of spies is afoot. The king's new coroner, Sir Law Kintour, investigates the death of a mysterious stranger in fifteenth-century Perth, Scotland. The investigation is complicated by the civil war brewing as the king raises his army against a rebellious duke. Sir Law is pitched further into intrigue and betrayal when he discovers a hired assassin is lurking in Perth. No one knows who will be the next victim.
Now Law must call on every resource he has to stop the killer.