Seduced in Secret (Distinguished Rogues, #18)

The banns have been called, the date is set, but he's falling fast and hard for the wrong woman.

When her parents announce they intend to break their promise to remain in London society for another year, Charlotte Waters is also given an ultimatum?make a suitable match immediately or start packing her trunks. Since leaving England is the last thing she wants, Charlotte puts aside her foolish longing for love and throws herself into the hunt for any proposal of marriage with the help of her good friends. However, her persistent infatuation for an engaged earl proves a great distraction when it becomes clear that his life is in peril...and Charlotte is the only one who's noticed.

Winston Bell, Earl of Hurlston, has his position in society, a loving mother, loyal friends, and an arranged marriage he's willing honor for duty, if not love?until a sweet, brave, and normally blushing wallflower puts herself in danger to save his life. His gratitude slowly blossoms into an attraction to a woman he shouldn't long to seek out at every turn. But when another attempt is made on his life, Charlotte Waters is fighting right by his side again, transforming attraction to deep desire. Can he prevent falling further under the spell of a woman he shouldn't want?

Distinguished Rogues Series
Book 1: Chills (Jack and Constance)
Book 2: Broken (Giles and Lillian)
Book 3: Charity (Oscar and Agatha)
Book 4: An Accidental Affair (Merrick and Arabella)
Book 5: Keepsake (Kit and Miranda)
Book 6: An Improper Proposal (Martin and Iris)
Book 7: Reason to Wed (Richard and Esme)
Book 8: The Trouble with Love (Everett and Whitney)
Book 9: Married by Moonlight (Gilbert and Anna)
Book 10: Lord of Sin (Julian and Portia)
Book 11: The Duke's Heart (Sinclair and Kitty)
Book 12: Romancing the Earl (Price and Lenore)
Book 13: One Enchanted Christmas (Otis and Margaret)
Book 14: Desire by Design (Alexander and Sylvia)
Book 15: His Perfect Bride (Harry and Ophelia)
Book 16: Pleasures of the Night (Teddy and Eugenia)
Book 17: Silver Bells (Hector and Ruby)
Book 18: Seduced in Secret (Winston and Charlotte)
Book 19: Yours Until Dawn (Drew and Aurora)
Book 20: No Ordinary Lady (Daniel and Marian)