Devil's Due (Luther Cross Book 1)

Luther Cross is a half-demon with a flair for style and a set of strange powers passed down through his unusual bloodline. He makes his living in Chicago as a paranormal investigator. When a young woman turns up at his door, pregnant by supernatural means, the case hits uncomfortably close to home. Luther thinks of his own mother and refuses to let this girl suffer the same fate. Someone is quietly building an army of half-demons, and Luther knows that few of his kind share his conscience. Heaven and Hell have kept a fragile truce for a long time. If this scheme succeeds, that peace collapses and the human world pays the price. Luther has to act before the first real disaster arrives.