Wolfman Confidential - Justin Robinson

When the Night War ravages the world, turning it into a universe of pulp monsters, humans become a downtrodden minority. Nick Moss, the last human private eye in LA, is searching for a shadowy monster slayer, for an invisible man with dangerous info who, well, vanished...and for a killer of talented human beauties--while trying to avoid being turned or killed outright by powerful monsters, some of whom are his employers or their lieutenants.

But Nick's uneasy past further complicates matters, as he discovers that almost nothing remains confidential in the City of Devils.