Les Pays d'hiver, tome 2
Barbara Hambly1999

John Aversin is still at large fighting dragons, and also studying their ways. After one such battle he witnesses a truly disturbin scene : a wounded dragon being resurrected by a wizard driving a jewelled glass spike through its skull.
Dismayed by this unnerving sight, John journeys far to seek the advice of Morkeleb, the great Black Dragon. But he finds Morkeleb now living in self-imposed exile, tryning to come to terms with his doomed love for Jenny, the powerful mage and mother of John's son, who has chosen the life of a human rather than that of a dragon.
Unless they can find a way to stop the wizards, the continued use of this dark magic will disrupt the natural links between Man and dragon, and threaten the balance of the word itself.

Titre original : Winterlands, book 2: Dragonshadow (1999)