Masquerade of Vengeance — Alice Chetwynd Ley

Years of exile in an Australian convict settlement fuelled his passion for revenge against three men. Now the day of reckoning was at hand... Sir Eustace Knowle was found battered to death. Threatening, anonymous letters had already been delivered to two others in the party gathered for the wedding of Sir George Marton's daughter. A chain of mysterious event and frightening "accidents" followed. It was at the masked ball that the Honourable Justin Rutherford and his niece, Anthea, witnessed the first incident--but this seemed an unlikely start to one of their famous adventures...