Death has come to court. As the plague rages outside the palace walls, tormented screams and pleas for help go unanswered by the members of the French court sheltered within. Mary, Queen of Scots, feels safe from the sickness - but she doesn't know that someone using the secret tunnels may bring the threat inside. Mary worries that those she loves - her husband, Francis, and her friends - may be at the mercy of the sick and dying. The infection doesn't distinguish between royals and commoners. Can they survive? And when Nostradamus receives a disturbing vision that portends Mary's own death, she wonders: How long will she reign?