I made a deal with the devil. Now he claims I'm his fated mate. When my best friend goes missing in Las Vegas, there's only one man I can turn to for help. Lucas Ifer. Billionaire playboy. CEO of Abaddon Inc. King of Sin City. And... the devil himself?Lucas-aka Lucifer-agrees to help me, but in exchange he wants one thing: me. He's dark, dangerous, and wickedly handsome. Oh, and evil incarnate. I should say no, but I can't. I'm that desperate. But when you make a deal with the devil, there's no escaping it. Now he owns my body for seven nights of sin. Even worse, he says I'm his fated mate and that we have a past stretching back through time-but I don't remember any of it. I'm Persephone being claimed by Hades, and I have no choice but to enter his underworld and become his dark queen. Is there any light left in that black heart? Or will his darkness consume me?Demon King is a sinfully sexy Hades and Persephone story with a Lucifer twist. This is book 1 in the Claimed By Lucifer trilogy - a complete series.