The Last Vampire King by Rosemary A Johns

A Vampire King. A secret spy. An arranged marriage bonded in blood.

Betrayed by the ruthless dragons, Sin, the most feared and powerful vampire in the Shadow Kingdoms, only desires one thing more than revenge.
His stolen wolf shifter Omega, Freya.
A bestial outcast within his treacherous magical court, he is compelled into an arranged marriage with his fated mate to end the war.
Freya is dragged into the vampire’s wicked nighttime world.
Yet she must hide the secrets of her birth and her passion for the enemy Dragon King. The handsome masked fae, her soulmate, who travels with her is hiding a dark secret of his own.
Freya unlocks a web of mysteries, political games, and intrigue in a seductive world of death and pleasure.
No one knows her true shifter powers or the fact that she is both thief and spy for the dragons. No one knows that the marriage is a plot to capture the last ever vampire king.
But then, Sin has secrets and an impossible choice of his own. He must use Freya’s blood to protect his doomed kingdom, no matter what it costs them both…even their hearts.

Three villainous kings. One strong heroine. And an epic love that could burn an empire.