The Demon and the Succubus

Second in the "deliciously wicked and sexy" ("New York Times") series starring four succubi sisters on the run from a deadly demon.
Amalya has spent the centuries using her succubus skills to become one of the most sought-after escorts at a high class brothel. Seducing and corrupting men to make her quota with her queen, Lilith, has left Amalya jaded about sex-until a devastatingly handsome new client triggers her most forbidden desires and delivers an enticing surprise.
Levi Spencer, Duke of Ashford, has been offered a deal he can't refuse in exchange for safely slipping Amalya back into Lilith's lair. But a demon with a vendetta is plotting something far more sinister than Amalya's death. And if Levi and Amalya can't stop him, it will mean the end of the world.