The year is 1317, and young squire Benedict Russell has joined the English-held garrison of Berwick-upon-Tweed after the spectacular Scottish victory at Bannockburn three years earlier. Serious and self-doubting, he can't wait for his time there to come to an end. Living on the disputed territory between Scotland and England is a precarious existence, and as the Scots draw ever closer and the English king does nothing to stop them, Benedict finds himself in a race against time to solve the brutal murder of a young girl and find the traitor who lurks within Berwick's walls.