Dragonmark - Sherrilyn Kenyon

Sherrilyn Kenyon returns with the next addictive novel in her globally bestselling Dark-Hunter series . . .

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 . . .