Murder Will Speak (Berkeley Brigade mysteries Book 1)

Corrine deCoventry was the lone female in the Berkeley Brigade, a quartet of aristocrats who charmed the London ton. But when the lovely young widow wore the deCoventry pearls to a masquerade ball, and they were stolen by a masked Robin Hood—the foursome, led by the dashing Lord Luten, moved into action to recover them. But there was murder afoot. First of the Berkeley Brigade mysteries.

Regency Mystery by Joan Smith; originally published by Fawcett Crest