Death on a Silver Tray (Beau Brummell #1)
Rosemary Stevens

Ever the gentleman, Brummell hastens to the Wrayburn house to do some inquiring of his own. It doesn't take long to realize that more than one person had motive to poison Lady Wrayburn. And Beau Brummell is going to find out who they are. Because if there's one thing that's never in style, it's murder.
"George Bryan "Beau" Brummell, the arbiter of fashion in Regency England, may seem an unlikely protagonist for a crime novel, but Stevens . . . brings off this debut mystery with great èlan. Readers of both historical mysteries and Regency romances will eagerly await sequels."