A week later, it has been announced that the French Ambassador will attend the pump room that evening, and guards have been placed to prevent Beaucaire from attending. His previously defeated opponents sing of how they bear "The Honours of War". Molyneux is still having trouble with Lucy but manages to convince her to arrange a secret meeting between Mary and Beaucaire. Beaucaire explains the situation to her, and asks if the identity of a lover truly matters? Lady Mary agrees. Winterset and his followers enter, followed by the Ambassador. Everyone is amazed when the Ambassador enters and kneels to the presumed barber, hailing him "A Son of France". The King of France is dead, and, out of danger, Beaucaire reveals himself as the Duke of Orleans and announces that Mary will be his future Duchess, to everyone's delight.