Justin Wilson 
Boy in the Skull Mask [EPUB ebook] 

The city of New Orleans, Louisiana has always been linked to the supernatural and occult, but until today, Detective Renee Chavez dismissed the claims as nothing more than tourist bait. When a murder investigation runs her afoul of supernatural creatures, she doesn’t know what to make of it. The situation grows more complicated by the arrival of a teenaged, eccentric, supernatural hunter, here on his own agenda. Despite her mistrust, if she’s to stop this monster before anymore innocents die, then Chavez and the enigmatic Zero Ozawa will have to combine their knowledge and work together.