City of Eternal Night (Crescent Series #2)

Mardi Gras approaches, bringing with it hordes of tourists eager to see the real-life Faery Queen holding court atop her festival float. When the Queen is kidnapped, it's up to Augustine, the fae-blooded Guardian of the city, to rescue her before time runs out. But Augustine's mystifying protégée, Harlow, complicates the task by unintentionally aiding the forces of evil, drawing danger closer with each step. The Queen might not be the first to die. . .