Ghost in Monte Carlo, The (Barbara Cartland, 48)

Golden-haired Mistral wins the heart of all Monte Carlo when, at her Aunt Emilie's order, she poses as the mysterious Mademoiselle Fantome, always clad in grey. An unknowing actress in a dark plot of revenge, Mistral discovers too late that the scheme to avenge an old wrong can only end in destroying her own new-found love