Fallen Angel (Book 1 of the Caelli Rivers series)

Melbourne is in the grip of fear as a serial killer stalks the streets, murdering innocent people in gruesome ways. There are no clues, no suspects and no end to the carnage in sight. Caelli Rivers is a homicide cop caught between two worlds as a three thousand year old banshee living among humans. She needs to stop the killer, otherwise all hell just might break loose.