Le cercle des immortels : Dark-hunters, tome 21
Sherrilyn Kenyon2016

Centuries ago, Illarion was betrayed - a dragon made human against his will, then forced to serve humanity as a dragonmount in their army, and to fight for them in barbaric wars, even while he hated everything about them. Enslaved and separated from everyone he knew and from his own dragon brothers, he was forced into exile in a fey realm where he lost the only thing he ever really loved.
Now he has a chance to regain what’s been lost - to have the one thing he covets most. But only if he gives up his brothers and forsakes the oaths he holds most dear. Yet what terrifies him most isn’t the cost his happiness might incur, it’s the fact that there is just enough human in his dragon’s heart that he might actually be willing to pay it and betray everything and everyone - to see the entire world burn and the Were-Hunter clans fall - to sacrifice his own brothers - for his own selfish desire.
Long ago, Edilyn saved Illarion’s life and almost tamed the feral beast. Now she must stop him from fulfilling the Dragonmark prophecy or do what she was trained to do. Slay the dragon who spared her life to save the rest of humanity. Something that should be easy for a dragonslayer of her skills, yet nothing is ever as simple as it seems. And sometimes, just sometimes, the key to salvation lies not in the hands of your most trusted friends, but in those of your worst enemies.

Titre original : Dragonmark (2016)