The Scholar, the Sphinx and the Fang of Fenrir — A.R. Cook

Two years after saving Acacia, the last living sphinx, from the night goddess Nyx, David Sandoval is happily married and settled down to a quiet life in Paris. But soon new monsters are after him from the other side of the Curtain, which separates the human world from the world of myth and legend. David discovers that a world-devouring creature, Fenrir, has broken free of his prison and is hunting Acacia for something she possesses and if he gets it, he can finally fulfill his fate to consume all existence. Reluctantly leaving behind his loving wife, David heads off in search of Acacia and his friend Gullin, the Master Huntsman who is trained to slay the most dangerous beasts ever known. But there is great evil afoot. Madness itself wants to claim David, for what purpose, no one knows. And there is rumor than an old adversary has returned, quite different from the last time David and Acacia saw him... Those enemies are nothing, however, compared to the new incarnation of Nyx, whose desire for the most prized gift of all Fenrir's ability to destroy any world will make him stop at nothing to attain it. The new god also knows what to do to ensure David will not interfere with his plans, as the young man did with the previous Night goddess. Old friends and new allies band together in this continuing adventure of the Scholar and the Sphinx, as both their worlds could soon come to an end.