To Tempt a Rake - The Circle of Sin, #3

Kate Woodbridge has spent most of her life sailing to exotic ports around the globe, acquiring an expertise in botany, along with a few less ladylike skills. So when a deathbed promise to her parents brings her to London to seek reconciliation with her grandfather, the imperious Duke of Cluyne, she feels like a fish out of water. Her outspoken views and fiery temper tend to set off sparks in Society-especially with the rakish Conte of Como.
A devil-may-care rogue, Marco finds the alluring and mysterious Kate a tempting target for his flirtations. But when murder strikes at the duke's country house party he begins to suspect that she's hiding a dark secret. He has his own clandestine reasons for offering to help her prove her innocence .