In the Arms of Love — Barbara Cartland

When he meets the beautiful Aspasis at the house of the Duchess of Grimstone, the Marquis of Thame assumes she is a skillful actress, superb in her role as an innocent girl. The debauchery of the Duchess and her guests is whispered about throughout England. Yet he soon learns that Aspasia is a pawn, living with a secret that could mean her death. When that secret comes to light, only the Marquise can save her.