At Chimneys, all are gathered to hear the mysteries explained. In the library, Boris finds Miss Brun with a pistol, as she means to kill him and get the jewel. They struggle; the gun goes off in her hand, killing her. Miss Brun killed Prince Michael, because he had recognized her as someone else. She was the last queen consort of Herzoslovakia, thought to have been murdered with her husband in the revolution; but she escaped. She wrote the coded letters to Captain O'Neill, an alias of King Victor, and signed them with Virginia Revel's name. Cade introduces the real M Lemoine to the group, while Hiram Fish snares King Victor, who has been posing as the French detective and in America as Nicholas. Anthony Cade gave "Mr Holmes" the dummy package; he gives the real memoirs to Jimmy McGrath to earn his one thousand pounds. Cade and Fish solve the conundrum; it points to a rose on the grounds, where the Koh-i-Noor is subsequently recovered. Anthony presents himself as the missing Prince Nicholas, ready to ally with the British syndicate. He offers himself as Herzoslovakia's next king. Earlier that day, he married Virginia, who will be his queen.