1296: King Edward I has led his army to Scotland, determined to take the country under his crown.

But the fierce Scots have no intention of submitting to their oppressor and violent and bloody war breaks out. 1311: Sir Hugh Corbett, Keeper of the Secret Seal, finds himself back in Scotland and is revisited by the horrors he witnessed there fifteen years ago. An anonymous letter was delivered to the new king.

It promised information about a fatal incident that could allow England to finally bow out of the war with the Scots. Tasked with finding out the truth about the murder, Corbett is forced to take risks he would rather avoid and put his faith in the words of strangers. But with an unknown traitor lurking in the shadows and danger around every corner, will Corbett be able to unravel the complex web of plots in time?