Midnight Masquerade

Deirdre Gowers aunt, the Duchess of Charney, had trapped Lord Belami into offering for her niece. Deirdre had accepted in order to escape having to marry someone she disliked. But now, at Beaulac for the New Years holiday, both participants were ready to renege on the engagement--until solving the mystery of the duchesss stolen diamond threw them together. Regency Romance/Mystery by Joan Smith; originally published by Fawcett