Pink Carnation novels

Eloise Kelly sets off for England to complete her disseration on the Scarlet Pimpernel and the Purple Gentain, discovering references to the most elusive spy of all, the Pink Carnation. As she works to unmask this spy, she stumbles across answers to all kinds of questions. Will she escape her bad luck and find a living, breathing hero all her own?

Eloise Kelly has gotten into quite a bit of trouble since she started spying on the Pink Carnation and the Black Tulip-two of the deadliest spies to saunter the streets of nineteenth-century England and France.
Not only has she unearthed secrets that will rearrange history, she's dallied with Colin Selwick and sought out a romantic adventure all her own. Little does she know that she's about to uncover another fierce heroine running headlong into...

After twelve years in India, Robert, Duke of Dovedale, returns to his estate in England to avenge the murder of his mentor during the 1803 Battle of Assaye. Robert plans to infiltrate the infamous, secretive Hellfire Club to uncover the murderer's identity--but he has no idea that an even more difficult challenge awaits him, one Lady Charlotte Lansdowne.

When schoolmarm Arabella Dempsey and Reginald "Turnip" Fitzhugh, often mistaken for the elusive spy The Pink Carnation, stumble upon a Christmas pudding with a cryptic message, the pair embark on a Yuletide adventure that takes them from modest drawing rooms to a duchess's lavish 12-day Christmas celebration.

Tiring of the endless parties and balls in the fall of 1806, Sally Fitzhugh investigates a rumor that reclusive duke Lucien is an actual vampire, an effort that is complicated by the exsanguination death of a young woman.