Dark Child of Forever (Dark Destinies #3)

A reluctant new Lord of Night. His vulnerable human queen. If they can't change five thousand years of history now, it will change them. Forever.

Fate has cast vampire Dominic Marchant and the human love of his life, Cassidy Chandler, into roles they never imagined. Thanks to his mad sire, he is now the Lord of Night, and Cassidy, with her unique ability to merge her mind with his, has become the incongruous mortal queen of his immortal kingdom. Even as he dreams of seeing the sun again and she can’t imagine becoming a vampire, they vow to reshape their domain into a world where vampires feed on love rather than fear and leave their prey swooning instead of dead.
 
But not all their subjects are pleased with the change in leadership. A powerful ancient vampire and his cadre of followers serve Dominic his greatest challenge yet just when reclaiming the day looks like a real possibility. Soon friends turn up in ashes, and Cassidy and his human family become targets in a dangerous game of cat-and-mouse that leads them and their unlikely, vampire-hunting allies deep into the wilds of the Canadian Rockies—and straight into their worst nightmares.
 
With their lives and the very existence of the world of night hanging in the balance, Dominic and Cassidy must decide whether to chase an impossible dream or finally embrace their dark destiny.