The White Lily

To the north of the Varis empire, a mysterious faction spreads propaganda against the vampire monarchy. Friedrich Volya, the Duke of Winter Hill, seeks to discover who they are before his uncle finds them first. King Dominik will punish the traitors with brutal force.
Local schoolteacher, the raven-haired Brennalyn, is on her own mission—to spy on the duke and discover what she can for the Black Lily. She longs to help the commonwealth and bring justice to the many orphans left behind from the ravages of the blood madness, like the children she lovingly keeps in her care. What she doesn't plan for is the heart-pounding attraction she feels for the duke, enemy to the Black Lily.
But when Brennalyn's secret puts her life and the life of her children in danger, Friedrich steps in as her protector, she finds out there's more to the duke than she thought.
Each book in the Vampire Blood series is STANDALONE:
* The Black Lily
* The Red Lily
* The White Lily
* The Emerald Lily