Murder Will Speak — Joan Smith

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/Romance by Joan Smith; originally published by Fawcett Crest