Menace of Club Mephistopheles — Joseph Duncan

Two-fisted private detective Dixon Peters is an Umbra, a subspecies of humanity with a knack for using magic. Problem is, he's better at solving crimes than casting spells. He's got a reputation in town for taking the weird cases no one else dares: serial killers, werewolves, ghosts... With the aid of his friend Ramon, a Cuban night club owner and fellow Umbra, and just a little help from Lady Luck, our gumshoe Dix must unravel a missing persons mystery with earth-shattering ramifications. Club Mephistopheles is up to no good. The members of the exclusive gentlemen's club are rich, powerful and rumored to be Satanists. They also have a magus on their side who's got Dix outclassed five ways to Sunday. In order to save the world, our bumbling gumshoe will have to battle shape-shifting familiars, hired goons, a demon-possessed butler and the most powerful (and well-dressed) warlock in the world.