My Lord Vampire — Debbie Raleigh

While the ton dances and gossips, another kind of society altogether claims the London night as its own. By the light of the moon, three noble vampires entrusted with the protection of their kind will discover that human desire is far from lost to them--and that love may be the only thing they long for more than life everlasting...

MIDNIGHT KISS
When an old gypsy woman gives Sally Jenkins a mysterious amulet--promising much happiness if she safeguards it, and doom if she gives it to another--Sally is intrigued. Born on the wrong side of the coverlet, and currently her half-sister's drudge, Sally has never had anything of value to call her own.

Then a tragic carriage accident in route to London suddenly presents Sally with the chance to live her near twin's life. Masquerading as Simone Gilbert, Sally is soon the toast of the ton, hosting dazzling parties and cozy salons--and the object of two men's dogged courtship.

Sally senses a dangerous hunger beneath Tristan Soltern's smooth-mannered interest that repulses her, but she is drawn to elegant, black-eyed Gideon Ravel--and tempted to prove to him that she is exactly what she seems.

It's a risky game--especially when she discovers that Gideon himself is something other than the refined gentleman she believes him to be, something far more dangerous and unbearably seductive...