Allison Brennan 
Carnal Sin [EPUB ebook] 

A chilling paranormal romance: Two weeks ago demon-hunters Moira O’Donnell and Rafe Cooper conquered Evil. But now Lust has taken hold in the City of Angels…The small Californian town of Santa Louisa is still reeling from the lethal rampage of the demon Envy, one of the Seven Deadly Sins released from Hell by black magic. But when more bodies bearing satanic marks surface in Los Angeles, former witch Moira O’Donnell knows the terror is beginning again. For a trendy LA nightclub has become a hot spot of lustful demonic activity. And as a supernatural war erupts, Moira and Rafe, her tortured and indomitable ally, are caught in the crossfire. Cornered by mortal and unearthly enemies, they must conquer their greatest fears to survive. But their growing passion for each other gives the demon Lust exactly what it needs to defeat them both.