Downside Rain

Another place lies palm to palm with the world we know. Downside, Earth's backdoor, where magic, madness and monstrosities abide, where rain falls from a cloudless red sky and neon pulses day and night. A fallen angel in a derelict tower weeps crystal tears. A powerful man hides a dark secret. Wraiths skim through the streets, hunting monsters. Rain and her partner Castle are wraiths. They'll take almost any assignment, providing it's legal and pays well.
They specialize in ridding Gettaholt City of monsters, be they mischevious but relatively benign sprites or ghouls which don't limit their feasting to the already dead. They are also ears and eyes for Alain Sauvageau; unnoticed, the pair gleam information for the crime baron. Rain would be happier working for Alain were he not always trying to get into her pants, but she refuses to be the reigning lothario's latest in a long line of affairs and jilted lovers.
Rain goes Upside on a mission for Alain and while there discovers River, a wraith who knows nothing of Downside. She is duty bound to introduce him to Downside society, an obligation she resents. When she's marked for death, she must survive attacks by demons and Gettaholt citizens compelled by powerful magic. Who is trying to kill her, and why? Is River friend or foe? Can a wraith die twice?