Dean Koontz's Frankenstein. Prodigal son - Dean R. Koontz

Every city has secrets.
But none as terrible as this.
His name is Deucalion, a mysterious, sleight-of-reality, artist who's travelled the centuries with a secret worse than death.
He arrives as a serial killer stalks the streets, a killer who selects his victims for the humanity missing in himself.
Detective Carson O'Connor is cynical and as tough as she looks.
Her partner Michael Maddison would back her up all the way to Hell itself - which may be where this case ends.
For Connor is suddenly talking about killers that are more - and less - than human.
Soon it will be clear that as crazy as she sounds, the truth is even more ominous.
For their quarry isn't merely a homicidal maniac - but his deranged maker.